Relevant bibliographies by topics / Collision spectroscopy

Academic literature on the topic 'Collision spectroscopy'

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Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Collision spectroscopy"

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Mathur, D., C. Badrinathan, F. A. Rajgara, and U. T. Raheja. "State-Diagnosed Ion-Neutral Collisions leading to Charge Transfer." Symposium - International Astronomical Union 120 (1987): 27–28. http://dx.doi.org/10.1017/s0074180900153732.

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A significant reservoir of potential energy in hot astrophysical plasmas exists in multiply charged positive ions. Inelastic collisional processes involving such ions govern the ionization and energy balance in such plasmas. Although inelastic processes such as, charge transfer, have been widely investigated, there remains a paucity of knowledge about charge changing processes where both reactions and products are state-diagnosed. We have applied high-resolution translational energy gain/loss spectroscopy to investigate state-diagnosed collisions between Kr2+ and H2 leading to single electron capture into specific electronic states of Kr+ at collision energies in the range 1–6 keV.
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Stoneman, R. C., M. D. Adams, and T. F. Gallagher. "Resonant-collision spectroscopy of Rydberg atoms." Physical Review Letters 58, no. 13 (March 30, 1987): 1324–27. http://dx.doi.org/10.1103/physrevlett.58.1324.

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Andersen, Nils. "Collision Spectroscopy with Optically Prepared Targets." Physica Scripta T95, no. 1 (2001): 7. http://dx.doi.org/10.1238/physica.topical.095a00007.

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Zhang, Feifan, Jianping Wang, Zhigang Liu, Chao Zhai, and Jiaru Chu. "Collision possibility analysis and collision avoidance for multi-object fibre-fed spectrographs with theta–phi positioners." Monthly Notices of the Royal Astronomical Society 500, no. 1 (November 11, 2020): 101–8. http://dx.doi.org/10.1093/mnras/staa1944.

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ABSTRACT Multi-object spectroscopy has become a valuable technique in numerous modern astronomical facilities. Most spectrographs have thousands of fibre positioners packed at a focal plane with shared working space. Therefore, positioners might collide with each other, which can lead to them being damaged. In this study, we first analysed the types of collisions between hexagonal patterned theta–phi positioners and the possibility of these collisions. Based on this, we proposed a motion planning method by deploying a proposed ‘safety zone’ within the positioner patrol area. Simulated experiments validated that our method could completely solve collisions between positioners with equal arms, such as the Large-sky-Area Multi-Object fibre Spectroscopic Telescope (LAMOST) and the Dark Energy Spectroscopic Instrument (DESI), or between positioners with unequal arms, such as the Multi-Object Optical and Near-infrared Spectrograph (MOONS).
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Haller, Ivan, Urooj A. Mirza, and Brian T. Chait. "Collision induced decomposition of peptides. Choice of collision parameters." Journal of the American Society for Mass Spectrometry 7, no. 7 (July 1996): 677–81. http://dx.doi.org/10.1016/1044-0305(96)85613-3.

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Moneti, Gloriano, Simona Francese, Guido Mastrobuoni, Giuseppe Pieraccini, Roberta Seraglia, Giovanni Valitutti, and Pietro Traldi. "Do collisions inside the collision cell play a relevant role in CID-LIFT experiments?" Journal of Mass Spectrometry 42, no. 1 (January 2007): 117–26. http://dx.doi.org/10.1002/jms.1151.

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Druetta, M., T. Bouchama, S. Martin, and J. Désesquelles. "VUV Spectroscopy of Ar9+ and Kr9+ Low Energy Collision with H2." International Astronomical Union Colloquium 102 (1988): 365–68. http://dx.doi.org/10.1017/s0252921100108103.

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Photon spectroscopy of low energy collisions between multicharged ions and neutrals has opened new possibilities of wavelength and energy level determination since recent multicharged ion sources like the E.C.R. source, giving μA electric current of highly multicharged ions, are available.The experimental set-up has been already described (1.2) The ion beam is produced by an E.C.R. ion source. Light emitted as a result of the collision is observed at 25* to the beam axis with a 3m grazing incidence (82*) spectrometer equipped with a 300 or 600 lines/mm grating blazed at 55.2 or 27.6 nm respectively. The detection is realised by micro-channel plates (MCP). Typical beam currents are 0.45 and 0.40 μA for Kr9+and Ar9+respectively, through the 8 mm diameter entrance hole of the gas cell. The gas pressure was kept at 5 × 10−5mbar. The emission cross sections of all the new observed lines have been mesured. Taking into account the statistics; the error on the beam intensity due to double collisions; the errors on the pressure, on the relative efficiency curve of the spectrometer and on the absolute calibration; we may estimate the error bar to ± 30%.
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Snels, Marcel, Stefania Stefani, Angelo Boccaccini, David Biondi, and Giuseppe Piccioni. "A simulation chamber for absorption spectroscopy in planetary atmospheres." Atmospheric Measurement Techniques 14, no. 11 (November 17, 2021): 7187–97. http://dx.doi.org/10.5194/amt-14-7187-2021.

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Abstract. A novel simulation chamber, PASSxS (Planetary Atmosphere Simulation System for Spectroscopy), has been developed for absorption measurements performed with a Fourier transform spectrometer (FTS) and, possibly, a cavity ring-down (CRD) spectrometer with a sample temperature ranging from 100 up to 550 K, while the pressure of the gas can be varied from 10 mbar up to 60 bar. These temperature and pressure ranges cover a significant part of the planetary atmospheres in the solar system, and the absorption chamber can thus be used to simulate planetary atmospheres of solar planets and extrasolar planets with similar physical conditions. The optical absorption path for the FTS absorption measurements is 3.2 m due to the implementation of a multi-pass setup inside the chamber. The FTS measurements cover a wide spectral range, from the visible to the mid-infrared, with a sensitivity sufficient for medium-strength absorption bands. The FTS has been used previously to measure high-pressure atmospheres, including collision-induced absorption bands and continuum absorption at ambient temperatures. PASSxS allows the measurement of the temperature dependence of collision-induced bands and continuum absorption, which is important for both the modeling of planetary atmospheres and fundamental processes involving collisions between molecules and atoms.
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Bordas-Nagy, Jozsef, and Keith R. Jennings. "Collision-induced decomposition of ions." International Journal of Mass Spectrometry and Ion Processes 100 (October 1990): 105–31. http://dx.doi.org/10.1016/0168-1176(90)85071-9.

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Alexander, A. J., P. Thibault, and R. K. Boyd. "Collision-induced dissociation of Cs4I3+. An Example of Superelastic Collisions?" Rapid Communications in Mass Spectrometry 3, no. 8 (August 1989): 267–72. http://dx.doi.org/10.1002/rcm.1290030806.

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Dissertations / Theses on the topic "Collision spectroscopy"

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López, José G. "Theoretical studies of the dynamics and spectroscopy of weakly bound systems." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127220592.

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Thesis (Ph. D.)--Ohio State University, 2005.
Title from first page of PDF file. Document formatted into pages; contains xv, 99 p.; also includes graphics (some col.). Includes bibliographical references (p. 95-99). Available online via OhioLINK's ETD Center
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Lin, Yawei. "Spectroscopy of High Energy Ion-neutral Collisions." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19720.

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This research work focused on studying the emission spectroscopy produced from the high energy ion-molecule collision processes in mass spectrometry. The collision experiments are described and divided into 4 chapters (Chapter 3, 4, 5, 6).N2O+● is an ion of atmospheric importance. In chapter 3 the investigation of the collision between high translational energy (4-8 keV range) N2O+● ions and Helium target gas in mass spectrometry using collision induced emission (CIE) spectroscopy is described.In chapter 4, the collision-induced emission (CIE) spectra from 4-8 keV collisions between projectile He+● ions and CO2 target gas (He+●/CO2) were obtained. In Chapter 5, to probe the validity of this hypothesis, CIE experiments were carried out to observe the photon emissions from keV collisions of a selection of projectile ions with O2 target gas. By studying the resulting CIE spectra, a second potential mechanism came to light, one that involves the nearly isoenergetic O2+. A → X state transition. In chapter 6, neutral hydroxymethylene and formaldehyde were generated by charge exchange neutralization of their respective ionic counterparts and then were reionized and detected as recovery signals in neutralization-reionization mass spectrometry in the modified VG-ZAB mass spectrometer.
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Hu, Xiao-ming. "Angle resolved photoelectron spectroscopy study of small molecules." Thesis, University of Aberdeen, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277242.

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Under the title 'Angle Resolved Photoelectron Spectroscopy Study of Small Molecules', the thesis discussed the following aspects: Processes after the interaction of photons with atoms or molecules, including photoscattering, photoexcitation and fluorescence, photoabsorption, photodissociation and photoionization; Concepts of photoionization and photoelectron spectroscopy, including ionization potentials, photoionization cross sections, photoelectron angular distributions, shape resonances and autoionization; Theory of photoionization and photoelectron angular distributions, including central field approximation, Hartree-Fock calculations and multichannnel quantum defect theory; Apparatus for an angle resolved high resolution photoelectron experiment, including the synchrotron radiation source at Daresbury Laboratory, UK and an angle resolved electron spectrometer system from NIST/ANL, USA; The experiment on CO2 at Daresbury Laboratory, including electron spectrometer calibrations, experimental procedures and data processing; Results and discussion, including results for the photoionization cross sections of the CO+2X2 Πh state, vibrational branching ratios and asymmetry parameters for the synmmetric stretch vibrations (000) to (500) in the CO+2X2 Πh state in the photon wavelength region of 687 - 790AA with a resolution of about 0.1AA, analysis of photoelectron spectra taken at the Tanaka-Ogawa resonances and result for the Franck-Condon factors for transitions from the autoionizing states to different vibrational levels of the molecule.
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Seamons, Scott Andrew. "The collision dynamics of OH(A)+H2." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:36319557-1efa-4840-8f46-c15479945a0c.

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This thesis presents a joint experimental and theoretical study of a bimolecular collision between OH(A) and H2 diatoms. The study focuses on the relationship between the initial, j, and final rotational angular momentum, j'. This relationship is explored from both a scalar point of view by measuring rotational energy transfer (RET), and a vectorial viewpoint by considering the collisional depolarisation. The experimental technique used in this investigation, Zeeman quantum beat spectroscopy, is first demonstrated by applying it to the determination of the lab-frame orientation of OH(X) photofragments following the photolysis of H2O2. The H2O2 is photolysed by circularly-polarised light at 248 nm, and Zeeman quantum beat spectroscopy probes the angular momentum orientation as a function of the photofragment spin-rotation level. The results of this experiment are compared with orientation parameters predicted by a simulation that couples the rotation of the parent molecule to the torsional motion during bond cleavage. The calculations from the model agree qualitatively with those from the experiment. The Zeeman quantum beat spectroscopy technique is then used to monitor the evolution of angular momentum polarisation of OH(A) radicals during collisions with H2. The technique allows for the determination of depolarisation cross sections for oriented and aligned distributions, as a result of collisions with H2. Alongside this, cross sections for collisional quenching to non-reactive OH(X)+H2 and reactive H2O+H products are determined. By resolving the fuorescence with a monochromator the contributions to depolarisation from elastic collisions (the elastic depolarisation cross sections) are measured alongside cross sections for RET. Cross sections for total depolarisation and rotational energy transfer demonstrate only weak dependence on the rotational quantum number of the OH(A) radical, NOH. Competing quenching processes that fall with NOH are likely a considerable cause of this weak dependence. Furthermore, the polarisation of the angular momentum of OH(A) is randomised following RET. The elastic depolarisation cross sections make only a small contribution to the depolarisation and fall with increasing NOH. Collectively these trends have not been seen previously in similar studies on OH(A) collisions with atomic colliders. For the theoretical calculations, a four-atom quasi-classical trajectory (QCT) method has been developed, utilising Lagrangian multipliers to fix the OH(A) and H2 bonds. The calculations demonstrate that collisions involving the formation of complexes that survive for several rotational periods are prevalent in this collision system, and that these lead to large amounts of depolarisation. The calculations also demonstrate that RET in the H2 diatom supports higher levels of RET in OH(A) than seen in previous triatomic systems. Additionally, when one diatom is depolarised the accompanying diatom is typically also depolarised. These trends, at least in part, are owed to the highly attractive and anisotropic potential energy surface (PES) describing the interaction. The QCT calculations overestimate the experimentally-measured cross sections by more than a factor of 2. The calculations are adiabatic and do not account for the non-adiabatic activity associated with this collision system, and this is likely one cause of the discrepancies. In an attempt to further account for this overestimation, alternative angular momentum binning approaches for the QCT calculations are developed, but with limited success. Further exploration of the topology of the PES used in the calculations suggests that inadequacies in this surface are a major contributor to the discrepancies.
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Noakes, Timothy Charles Quentin. "Coaxial impact collision ion scattering spectroscopy of semiconductor and metal surfaces." Thesis, University of Warwick, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308005.

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Rock, Andrew Boyd, and n/a. "Low Energy Collision Induced Vibrational Relaxation in B3II+ou Iodine." Griffith University. School of Science, 1996. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050920.144408.

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Understanding energy transfer processes is an essential prerequisite for the deep understanding of all chemical processes. This thesis investigates the process of vibrational relaxation (or deexcitation) of highly vibrationally and electronically excited molecular iodine (I2) induced by very low energy collisions in a supersonic free jet with six foreign gases. In an investigation of the state-to-field relaxation of I2 (B 3II+ou, v = 16) induced by collisions with He at temperatures of 2 to 12 K we find that the absolute relaxation rates are an order of magnitude smaller than those at 300 K and that the explanation of the magnitudes of these rates does not require enhancement due to low energy orbiting resonances. We find that the rates scale well with estimated collision encounter rates that account for the attractive part of the intermolecular potential. A second investigation with a much wider scope explores vibrational relaxation from v = 21 to 24 with six foreign gases: He, Ne, Ar, H2, D2 and N2. For this investigation a new type of experimental procedure has been designed and implemented that records a detailed and complete map of the fluorescence from B3II+ouI2 that is resolved with respect to both fluorescence frequency and time. These not only yield state-to-field rates, but coupled with a novel deconvolution method for growth curve fitting, yield absolute state-to-state rates for vibrational relaxation processes with Av=-1, -2, -3 and -4. The dependence of the relaxation rates on the collision partner, temperature and Av are discussed. An exponential dependence on the vibrational energy gap may be adequate to characterise the Av dependence of vibrational relaxation. The frequency resolution of the experimental data also reveals that some of the energy released by vibrational de-excitation is transferred to the rotation of the I2 molecule. We find this process is best characterised by an exponential dependence on the change of I2 angular momentum and that its extent scales with the mass of the collision partner. Measurements of the low-energy collision-induced quenching of B 3II+ouI2 are also reported for all six foreign gases. The possibility arises from the rates that the mechanism for quenching by H2 and D2 at low temperatures is different to that of the other gases and to that for H2 and D2 at high temperatures.
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Rock, Andrew Boyd. "Low Energy Collision Induced Vibrational Relaxation in B3II+ou Iodine." Thesis, Griffith University, 1996. http://hdl.handle.net/10072/366393.

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Understanding energy transfer processes is an essential prerequisite for the deep understanding of all chemical processes. This thesis investigates the process of vibrational relaxation (or deexcitation) of highly vibrationally and electronically excited molecular iodine (I2) induced by very low energy collisions in a supersonic free jet with six foreign gases. In an investigation of the state-to-field relaxation of I2 (B 3II+ou, v = 16) induced by collisions with He at temperatures of 2 to 12 K we find that the absolute relaxation rates are an order of magnitude smaller than those at 300 K and that the explanation of the magnitudes of these rates does not require enhancement due to low energy orbiting resonances. We find that the rates scale well with estimated collision encounter rates that account for the attractive part of the intermolecular potential. A second investigation with a much wider scope explores vibrational relaxation from v = 21 to 24 with six foreign gases: He, Ne, Ar, H2, D2 and N2. For this investigation a new type of experimental procedure has been designed and implemented that records a detailed and complete map of the fluorescence from B3II+ouI2 that is resolved with respect to both fluorescence frequency and time. These not only yield state-to-field rates, but coupled with a novel deconvolution method for growth curve fitting, yield absolute state-to-state rates for vibrational relaxation processes with Av=-1, -2, -3 and -4. The dependence of the relaxation rates on the collision partner, temperature and Av are discussed. An exponential dependence on the vibrational energy gap may be adequate to characterise the Av dependence of vibrational relaxation. The frequency resolution of the experimental data also reveals that some of the energy released by vibrational de-excitation is transferred to the rotation of the I2 molecule. We find this process is best characterised by an exponential dependence on the change of I2 angular momentum and that its extent scales with the mass of the collision partner. Measurements of the low-energy collision-induced quenching of B 3II+ouI2 are also reported for all six foreign gases. The possibility arises from the rates that the mechanism for quenching by H2 and D2 at low temperatures is different to that of the other gases and to that for H2 and D2 at high temperatures.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
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Watson, Cameron William. "A study of the spectroscopy and collision dynamics of SiX (X = F,C1) radicals." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/14646.

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This thesis concerns the study of state-specific collision-induced energy transfer processes between the SiF C2 Δ and B2Σ+ and the analogous SiC1 B'2 Σ+ states. Laser excitation spectra established the wavelengths at which the SiF B2Σ+ (v' = 0,1,2,4 and 5) and C2 Δ (v' = 0,1) levels could be populated selectively. The vibrational transition probabilities of the C - X and B - X systems were measured by observations of the resultant dispersed fluorescence. Comparison with the calculated Franck-Condon factors allowed an assessment of the behaviour of the transition dipole moment functions. The B - X transition moment was essentially invariant with internuclear separation. In contrast, the C - X transition moment was found to be strongly decreasing with increasing internuclear separation. These observations were justified on the basis of simple linear combination of atomic orbitals arguments. The radiative lifetimes of the C and B states were shown to be 94 ± 2 ns and ≤ 10 ns respectively by time resolved measurements of the C - X and B - X decays. Total quenching cross sections for removal of the SiF C (v' = 0,1) state were found to be large for the molecular quenchers H2, N2, CH4 and CO2, although no quenching was observed for Ar and He. A small but quencher dependent fraction of the removed C state molecules was transferred to the B2 Σ+ state except for CO2 as a quencher. The product B state vibrational populations were shown to correlate well with the Franck-Condon overlap between the initial and product vibronic states. The study of the isoelectronic SiC1 transfer system produced results in good agreement with, but of improved precision to those of previous studies. The B' state quenching was efficient for all collision partners with crosssections shown to correlate with long range attractive forces between the collision pair.
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Verzhbitskiy, Ivan. "Spectroscopie de Raman de haute sensibilité dans des gaz à effet de serre : bandes de transitions doubles ou harmoniques." Angers, 2011. http://www.theses.fr/2011ANGE0076.

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Celle thése porte sur I'étude, grace a la diffusion Raman spontanée, de deux types de transitions qui apparaissent dans des gaz atmosphériques : les transitions simultanées et les transitions harmoniques. D’abord, l’effort a porté sur une double diffusion Raman incohérente dans Ie mélange SF6-N2, ou les deux molécules sont simultanément Ie siége d’une transition Raman autorisée. Un spectre trés précis a été enregistré et interprété quantiquement. Un bon accord entre théofie el expéfience a été trouvé pour les moments et les profits spectraux a condition que toutes les contributions importanles a tongue portée soient incorporées dans Ie modéle de polarisabilité induite par collisions. Les me‘canismes de polarisation présents dans Ie modéle simple de deux molécules polarisables ponctuelles élaienl suffisants pour décrire la composante anisolrope mais, pour rendre compte de la composante isotrope, l'utilisation du modéle bien plus sophistiqué "alome-molécule linéaire" a été nécessaire. Dans la deuxiéme partie de ce travail, la premiére harmonique de la vibration d'étirement asymetrique du CO2 a été étudiée. Contrairement aux précédentes qui sont induites par collision, celte transition est permise. La bande correspondanle s'avére presque entiérement dépolarisée, en accord avec l'affirmation §usqu'aIors vérifiée que pour la tfansition fondamentale) selon laquelle les vibrations asymétriques donnent lieu a des raies dépolarisées. Un prolocole rigoureux a été appliqué a l’interprétation des spectres enregislrés, impliquanl des effe/s anharmoniques et les couplages entre les modes. Nous avons simulé les profits en considérant les forts effets de couplages entre raies
The purpose of this thesis was the understanding, viaspontaneous Raman scattering, of two types of transitions relevant to atmospheric gases: simultaneous transitions and overtone transitions. Regarding simultaneous transitions, the effort was mainly on double incoherent Raman scattering by SF6-N2, in which the two molecules simultaneously undergo a Raman-allowed transition. A highly accurate spectrum was recorded and interpreted quantum-mechanically. Agreement both in moments and in shapes was found with predictions made on the basis of a collision-induced polarizabilily model, provid€'d all Si9Sificant lo•9-ran9e contribul‹Ol0S were incorporated. The polarization mechanisms that survive in the simple model of two point-polarizable molecules were sufficient for the description of the anisotropic component, but, for the realistic description of the isotropic remnant, use of the far more sophisticated "atom-linear molecule" model was needed. In the second part of the thesis, the first overtone of the asymmetric stretch vibration, 2v3, of CO2 was studied. Unlike the previous transitions, which are collision-induced, overtones are allowed lransilions yet in the specific case of the 2v3 overtone the band was almost entirely depolarized, in agreement with the assertion (so far stated and checked for fundamental transition only) that asymmetrical vibrations give rise to depolarized lines. A rigorous protocol was applied to the interpretation of the reCOfded spectra, involving electric, optical and mechanical anharmonic effects and intermode couplings. Complete shape analysis was carried out from first principles to simulate the band profiles and the strong line-mixing effects
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Dawson, Donald Frederick. "Collision-induced emission spectroscopy of small polyatomic molecules and tandem mass spectrometry of perfluorinated organics." Thesis, University of Ottawa (Canada), 2001. http://hdl.handle.net/10393/9035.

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The CIE studies presented in Chapter 2 consisted of a source generated fast moving 8 keV projectile-ion, M1+•, undergoing a collision encounter with a stationary target gas, G1, under single collision conditions (i.e., ≈90%T). During the collision event, a non-momentum transfer occurs, that deposits an amount of internal excitation energy, Delta(DeltaE int), into the projectile-ion, producing an excited electronic state (M1+•)* species. Thus the (M1 +•)* species may now exhibit optical emission and/or fragment into ground, M2+ + M3•, or excited, (M2)* + M3• M2+ + (M3•) *; (M2+)* + (M3•) *, electronic state dissociation products. Additionally, if the charge exchange process between M1+• and G1 is present, a ground M1, or excited (M1)* electronic state parent neutral may be produced. Thus, again the (M1)* species may now exhibit optical emissions and/or fragment into ground or excited electronic state dissociation products. As well, with respect to the stationary target gas the (G1)* and (G1+•)* species and/or their fragments may be produced. For the small polyatomic projectile-ions studied here of the N≡N+•, C≡O+•, O=C=O +•, O=C=C=O+• systems, intact parent-ion emissions were observed for all of them, except for the latter species. As well, intact parent neutral emissions were only observed for N≡N, C≡O. For the larger polyatomic projectile-ions studied here of the C6H6+•, C6F 6+•, and C4H4O+• systems, no intact-parent emissions were observed, only those of weak atomic and diatomic fragment emissions. The tandem mass spectrometry studies of perfluorinated organics, presented in Chapters 3 and 4, were conducted on a series of iodo, oxo and unsaturated compounds. In particular, the perfluoro iodo compounds were hoped (with iodine being such a good leaving group) to be possible ideal sources of unrearranged fragment perfluorocarbocations, CnF m+. However, unfortunately this did not always prove to be the case.(e.g., the primary metastable loss from (CF3) 3CI+• was unexpectedly FI and not I• ). For the perfluoro iodo compounds, the isomers of perfluorobutyl, C4F9I, and perfluoropropyl, C3F7I, iodides were utilized as precursors. (As well, (CF3)3C--C(CF 3)3 was utilized as a precursor for (CF3) 3C+). Specifically, it was proposed here that the (fragment) perfluorocarbocations, CnFm+ possessed a reserved cation stability order (i.e., primary > secondary > tertiary); CF 3CF2CF2CF2+ > (CF 3)3CFCF2+ > (CF3) 3C+; that is not seen in their respective hydrocarbon counterparts. (Abstract shortened by UMI.)
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Books on the topic "Collision spectroscopy"

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C, Tabisz G., Neuman M. N, North Atlantic Treaty Organization. Scientific Affairs Division., and NATO Advanced Research Workshop on Induced Spectroscopy: Advances and Applications (1993 : Banff, Alta.), eds. Collision- and interaction induced spectroscopy. Dordrecht: Kluwer Academic Publishers, 1995.

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Tabisz, G. C., and M. N. Neuman, eds. Collision- and Interaction-Induced Spectroscopy. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0183-7.

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Tabisz, G. C. Collision- and Interaction-Induced Spectroscopy. Dordrecht: Springer Netherlands, 1995.

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Noakes, Timothy Charles Quentin. Coaxial impact collision ion scattering spectroscopy of semiconductor and metal surfaces. [s.l.]: typescript, 1995.

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Nikerov, V. A. Kinetika degradat͡s︡ionnykh prot͡s︡essov. Moskva: Ėnergoatomizdat, 1985.

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Shevelʹko, V. P. Atoms and their spectroscopic properties. Berlin: Springer, 1997.

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Shevelko, Viatcheslav P. Atoms and Their Spectroscopic Properties. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997.

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Shtanʹko, V. F. Vvedenie v opticheskie spektry atomov i teorii͡u︡ stolknoveniĭ: Uchebnoe posobie. Tomsk: Tomskiĭ politekhn. in-t im. S.M. Kirova, 1985.

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Colloque Collisions et rayonnement (4th 1985 Orléans, France). Colloque Collisions et rayonnement: 18-20 septembre 1985, Orléans, France. Les Ulis, France: Editions du physique, 1986.

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Beyer, H. F. X-ray radiation of highly charged ions. Berlin: Springer, 1997.

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Book chapters on the topic "Collision spectroscopy"

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Demtröder, Wolfgang. "Laser Spectroscopy of Collision Processes." In Laser Spectroscopy, 694–735. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-662-08260-7_13.

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Demtröder, Wolfgang. "Laser Spectroscopy of Collision Processes." In Laser Spectroscopy 2, 429–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44641-6_8.

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Aono, Masakazu, and Mitsuhiro Katayama. "Impact Collision Ion Scattering Spectroscopy." In Compendium of Surface and Interface Analysis, 275–82. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6156-1_45.

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Demtröder, Wolfgang. "Laser Spectroscopy of Collision Processes." In Advanced Texts in Physics, 725–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05155-9_13.

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Mlynek, J., E. Buhr, and W. Lange. "Collision-Induced Ramsey Resonances in Sm Vapor." In Laser Spectroscopy VIII, 302–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-540-47973-4_90.

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Hering, P., S. L. Cunha, and K. L. Kompa. "Cars Studies of Nonadiabatic Collision Processes." In Methods of Laser Spectroscopy, 331–34. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-9459-8_43.

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Birnbaum, George, and Bertrand Guillot. "Cancellation Effects in Collision Induced Phenomena." In Collision- and Interaction-Induced Spectroscopy, 1–30. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0183-7_1.

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Guillot, B., and Y. Guissani. "Simulation of the Far Infrared Spectrum of Liquid Water and Steam Along the Coexistence Curve from the Triple Point to the Critical Point." In Collision- and Interaction-Induced Spectroscopy, 129–42. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0183-7_10.

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Ladanyi, Branka M., Munir S. Skaf, and Ying Q. Liang. "Interaction-Induced Contributions to Spectra of Polar Liquids." In Collision- and Interaction-Induced Spectroscopy, 143–57. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0183-7_11.

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Piasecki, J. "Kinetic Theory Approach to Interaction Induced Light Scattering." In Collision- and Interaction-Induced Spectroscopy, 159–67. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0183-7_12.

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Conference papers on the topic "Collision spectroscopy"

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De Lucia, Frank C. "Molecular collisions at very low temperature." In High Resolution Spectroscopy. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/hrs.1993.tua5.

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We have reported a number of investigations in which a newly developed collisional cooling method was used to investigate collisional processes between gas phase atoms and molecules at very low temperatures.1-7 In these studies the molecules are effectively in thermodynamic equilibrium with their collision partners, but at temperatures far below their freezing points. Used in conjunction with conventional equilibrium cells, measurements over the entire 1 - 1000 K region can be made. This range makes possible both the observation of new collision phenomena at low temperature and the study of collisions over a wide enough range to consider the collisions spectroscopically.
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Bagnato, V., L. Marcassa, C. Tao, Y. Wang, and J. Weiner. "Two-Color Photo-Associative Ionization Collisions between Sodium Atoms." In High Resolution Spectroscopy. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/hrs.1993.pd6.

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Collisions of ultracold trapped atoms ( T< 1mK) have opened a new field of atomic collisions with abundant opportunities for theory and experiments. Photo-associative ionization (PAI) in sodium atoms has been the first two-body collision Studied in optical traps3. In this process two ground state Na atoms absorb two photons during the course of the collisional encounter. The first absorption at long range put the colliding system on an attractive C3/R3 potential curve, and the two atoms begin to accelerate toward each other. A second absorption promotes the system to a doubly excited Na(3p)+Na(3p) potential curve from which the PAI process takes place at short range.
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BESSON, DAVE Z. "Heavy Quark Spectroscopy: Transitions and Decays." In Physics in Collision 19. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812792648_0018.

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Spain, Eileen M., Christopher J. Smith, Mark J. Dalberth, and Stephen R. Leone. "Laser Preparation and Probing of Initial and Final Angular Momentum States in the Collision-Induced Energy Transfer Ca (4s4p 3P1) + He → Ca (4s4p 3P2) + He." In High Resolution Spectroscopy. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/hrs.1993.thb4.

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The nature of atomic collisions can be revealed through the preparation and probing of aligned or oriented states. Intense interest in this research topic is evident by the numerous current experimental and theoretical investigations.1 The results of these studies provide a means of visualizing the important mechanisms and symmetries of the collision process with unprecedented detail.
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Rosner, Jonathan L. "Hadron Spectroscopy — A 2005 Snapshot." In XXV PHYSICS IN COLLISION: Proceedings of the XXV International Conference on Physics in Collision. AIP, 2006. http://dx.doi.org/10.1063/1.2173591.

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Lett, P. D. "Photoassociation in ultracold collisions: High resolution spectroscopy from the collision continuum." In The 19th international conference on the physics of electronic and atomic collisions. AIP, 1996. http://dx.doi.org/10.1063/1.49783.

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Tribedi, Lokesh C. "Momentum spectroscopy in ion-atom collision." In The 21st international conference on the physics of electronic and atomic collisions (21 IPEAC). AIP, 2000. http://dx.doi.org/10.1063/1.1302688.

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Ballard, J., and D. A. Newnham. "Absorption spectra of cold vapours using FTS and collision cooling." In Fourier Transform Spectroscopy. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/fts.1995.ffa3.

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Spectra of polyatomic molecules, which are often very complex with many hot bands at room temperature , are significantly simplified if the sample can be cooled. The simplification aids analysis of the spectra in terms of rotational constants. Similarly spectral parameters such as line broadening coefficients, are needed to be known at cold temperatures for correct interpretation of many atmospheric measurements. However many polyatomic molecules also condense readily on cooling, so gas phase spectroscopy using conventional absorption cells at low temperatures is difficult, if not impossible due to the large negative temperature coefficient of SVP.
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Bayram, Burcin, Jacob McFarland, Ceylan Guney, and Phillip Arndt. "COLLISION DYNAMICS OF EXCITED SODIUM MOLECULES." In 69th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.tc02.

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Sur, Sangeeta, Richard Dawes, Ernesto Quintas S�nchez, and Steve Ndengue. "INELASTIC COLLISION DYNAMICS OF O3 + Ar." In 74th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.rj08.

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Reports on the topic "Collision spectroscopy"

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Lester, M. I. Spectroscopy and reaction dynamics of collision complexes containing hydroxyl radicals. Office of Scientific and Technical Information (OSTI), February 1992. http://dx.doi.org/10.2172/5710534.

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Lester, M. I. Spectroscopy and reaction dynamics of collision complexes containing hydroxyl radicals. Progress report, June 1, 1991--May 31, 1992. Office of Scientific and Technical Information (OSTI), February 1992. http://dx.doi.org/10.2172/10127584.

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Kielkopf, J. Spectroscopic studies of hydrogen collisions. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/5810252.

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Gallagher, A. Spectroscopic diagnostics of electron-atom collisions. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/5957609.

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Kielkopf, J. Spectroscopic studies of hydrogen collisions. Progress report. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/10127196.

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Kielkopf, J. Spectroscopic studies of hydrogen atom and molecule collisions. Office of Scientific and Technical Information (OSTI), September 1989. http://dx.doi.org/10.2172/5469041.

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Carpenter, M. P., R. V. F. Janssens, and I. Ahmad. Gamma-ray spectroscopy of neutron-rich products of heavy-ion collisions. Office of Scientific and Technical Information (OSTI), August 1995. http://dx.doi.org/10.2172/166333.

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Kielkopf, John F. A spectroscopic study of hydrogen atom and molecule collision. Final report. Office of Scientific and Technical Information (OSTI), July 2002. http://dx.doi.org/10.2172/808754.

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Kielkopf, J. F. A spectroscopic study of hydrogen atom and molecule collisions. Progress report, 1994--1997. Office of Scientific and Technical Information (OSTI), January 1997. http://dx.doi.org/10.2172/621888.

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Gallagher, A. Spectroscopic diagnostics of electron-atom collisions. Final report, May 1, 1987--December 31, 1991. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/10116831.

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