Bibliografie tematiche / Isotope shift

Letteratura scientifica selezionata sul tema "Isotope shift"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 4 febbraio 2022

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Articoli di riviste sul tema "Isotope shift"

1

Fujii, T., F. Moynier, A. Agranier, E. Ponzevera e M. Abe. "Nuclear field shift effect of lead in ligand exchange reaction using a crown ether". Proceedings in Radiochemistry 1, n. 1 (1 settembre 2011): 387–92. http://dx.doi.org/10.1524/rcpr.2011.0069.

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AbstractLead isotopes were fractionated by the liquid-liquid extraction technique between an aqueous phase and a crown ether. After purification by ion-exchange chemistry, the 207Pb/206Pb and 208Pb/206Pb isotopic ratios were measured by multiple-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Isotope fractionations > 0.05‰ have been found. The conventional equilibrium mass-dependent isotope effect estimated by an ab initio calculation was smaller than the Pb isotope fractionation experimentally obtained. Conventional mass-dependent isotope fractionation is not a valuable explanation for our results. The nuclear field shift effect, which results from the isotopic change in the nuclear size and shape, was also estimated by an ab initio method combined with a finite nucleus model. The nuclear field shift effect calculated was in agreement with our experimental results. Therefore, this study reports the first nuclear field shift effect of Pb in an equilibrium ligand exchange reaction.
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2

Yu, Geng-Hua, Peng-Yi Zhao, Bing-Ming Xu, Xiao-Ling Zhu e Wei Yang. "Isotope shift calculations of Li-like neutron-rich and neutron-deficient Mg isotopes". Modern Physics Letters B 31, n. 02 (20 gennaio 2017): 1750003. http://dx.doi.org/10.1142/s0217984917500038.

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The isotope shifts of the [Formula: see text]–[Formula: see text] transitions for the Li-like neutron-rich and neutron-deficient [Formula: see text] isotopes are calculated using the multi-configuration Dirac–Hartree–Fock (MCDHF) method and the relativistic configuration interaction approach. The results provided herein can be employed for the consistency check with the nuclear root-mean-square (rms) nuclear charge radii of the short-lived magnesium isotopes from the experimental isotope shifts using the corresponding transitions. The methods used here could also be applied to other few-electron Li-like systems and the analogous isotope shift results could be obtained.
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3

Fujii, T., F. Moynier, A. Agranier, E. Ponzevera e M. Abe. "Isotope fractionation of palladium in chemical exchange reaction". Proceedings in Radiochemistry 1, n. 1 (1 settembre 2011): 339–44. http://dx.doi.org/10.1524/rcpr.2011.0060.

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Abstract Palladium isotopes were fractionated by the solvent extraction technique with a crown ether. After purification by ion-exchange chemistry, the isotopic ratios of 105Pd/106Pd, 108Pd/106Pd, and 110Pd/106Pd were determined by multiple-collector inductively coupled plasma mass spectrometry. Isotope fractionations between the two phases were found to be larger than 0.1‰. The isotope fractionation of the odd atomic mass isotope (105Pd) showed a deviation from that estimated from the even atomic mass isotopes (106Pd, 108Pd, and 110Pd). The mass-independent isotope fractionation found was attributable to the nuclear field shift effect. The quantum chemical calculations for the different Pd species supported the validity of the isotope fractionation factors obtained.
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4

Allen, Philip B. "Isotope shift controversies". Nature 335, n. 6189 (settembre 1988): 396–97. http://dx.doi.org/10.1038/335396a0.

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5

Estreicher, Stefan K. "Vibrational Dynamics of Impurities in Semiconductors: Phonon Trapping and Isotope Effects". Materials Science Forum 725 (luglio 2012): 203–8. http://dx.doi.org/10.4028/www.scientific.net/msf.725.203.

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Optical tools such as infra-red absorption, photoluminescence, or Raman spectroscopy have been used for decades to observe the localized vibrational modes associated with impurities in semiconductors. The frequencies of these modes slightly shift with the isotope of the impurity while host-atom isotopes often show up as shoulders in the spectra. These shifts and shoulders are precious indicators of the nature of the defect. But sometimes, very small isotope-related frequency shifts cause very large changes in vibrational lifetimes. Impurity-isotope effects have now been predicted to impact the thermal conductivity of semiconductors containing a few atomic percent of impurities. Impurity isotope effects can be surprisingly large.
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6

ZHAO, PING, J. R. LAWALL e F. M. PIPKIN. "ISOTOPE SHIFT MEASUREMENTS OF HELIUM". Modern Physics Letters B 05, n. 24n25 (ottobre 1991): 1625–33. http://dx.doi.org/10.1142/s0217984991001957.

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The helium isotope shift provides invaluable information for testing theories describing many-body systems. We review the recent advances in measurements of the isotope shifts for helium with an emphasis on a new experimental technique.
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7

Anselment, M., S. Chongkum, K. Bekk, S. G�ring, A. Hanser, G. Meisel e H. Rebel. "Isotope shift of a series of Sr isotopes". Zeitschrift f�r Physik D Atoms, Molecules and Clusters 3, n. 4 (dicembre 1986): 421–22. http://dx.doi.org/10.1007/bf01437201.

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8

Simien, Clayton E., Samuel M. Brewer, Joseph N. Tan, John D. Gillaspy e Craig J. Sansonetti. "Progress at NIST in measuring the D-lines of Li isotopes using an optical frequency synthesizerThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May – 4 June, 2010." Canadian Journal of Physics 89, n. 1 (gennaio 2011): 59–62. http://dx.doi.org/10.1139/p10-096.

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Precise spectroscopic experiments with light atoms can provide information about nuclear properties that are very difficult to obtain in electron scattering experiments. For example, relative nuclear radii of low-Z isotopes can be determined accurately from isotope shifts. Theory has attained sufficient accuracy to study exotic, short-lived halo nuclei by interpreting precise spectroscopic measurements. However, serious inconsistencies remain in the measured isotope shifts for the D1 and D2 lines of the stable isotopes (6Li and 7Li). The latest experiments, within the last decade, are in strong disagreement with each other and with theory. We report on the progress of a new experiment at the National Institute of Standards and Technology (NIST) to measure these lithium D lines using an optical frequency comb. A preliminary result for the splitting isotope shift (SIS) is presented.
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Sánchez, R., M. Žáková, Ch Geppert, J. Krämer, A. Krieger, D. Tiedemann e W. Nörtershäuser. "Frequency-comb-based measurements of lithium and beryllium isotopes for nuclear structure studiesThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at University of Windsor, Windsor, Ontario, Canada on 21–26 July 2008." Canadian Journal of Physics 87, n. 7 (luglio 2009): 825–34. http://dx.doi.org/10.1139/p09-026.

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We report on the measurement of the 2s-3s transition frequencies in the stable lithium isotopes and 2s-2p isotope shift measurements of 7,9,10,11Be, using a femtosecond frequency comb. For the beryllium isotopes, we extract the changes in the mean-square nuclear charge radius along the isotope chain by comparison with high-precision atomic mass shift calculations. The 2s-3s transition frequency is compared with theoretical calculations, and possibilities to extract an absolute value for the nuclear charge radius of lithium isotopes are discussed.
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10

Furmann, B., A. Jarosz, D. Stefańska, J. Dembczyński e E. Stachowska. "Isotope shift in chromium". Spectrochimica Acta Part B: Atomic Spectroscopy 60, n. 1 (gennaio 2005): 33–40. http://dx.doi.org/10.1016/j.sab.2004.10.007.

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Tesi sul tema "Isotope shift"

1

Berengut, Julian Carlo Physics Faculty of Science UNSW. "Isotope shift and relativistic shift in atomic spectra". Awarded by:University of New South Wales. Physics, 2006. http://handle.unsw.edu.au/1959.4/23900.

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At present several groups are analysing quasar absorption spectra to search for variation of the fine structure constant, alpha, across space and time. These studies compare the wavelengths of several transitions observed in the absorption clouds with those seen in the laboratory, and interpret anomalies as variation in alpha. One group has already presented evidence that alpha may have been smaller at an early epoch. Other groups using different telescopes see no variation. These studies use the ???many-multiplet??? method, which relies on the utilisation of many transitions in many ions to enhance the size of the effects and remove sources of systematic error. While this method offers an order-of-magnitude improvement in sensitivity over the previously used alkali-doublet method, the alpha-dependence (relativistic shift) of every transition used in the analysis must be calculated ab initio. In this thesis we present a method for the precise calculation of relativistic shifts, based on an energy calculation involving combination of the configuration interaction method and many-body perturbation theory. The many-multiplet method also introduces a potential systematic error: if the relative isotope abundances of the absorbers differ from terrestrial abundances then there can be spurious shifts in the measured wavelengths, which may be incorrectly interpreted as variation of alpha. A ???conspiracy??? of several isotopic abundances may provide an alternative explanation for the observed spectral anomalies. To account for these systematic errors we need accurate values of the isotope shift. We calculate these shifts using the finite-field method to reduce the problem to that of an energy calculation, which in turn is done using the same method used for the relativistic shift. We present the results of our calculations for a variety of atoms and ions seen in quasar absorption spectra. The results of this research should allow astrophysicists to measure isotope abundances in the absorbers directly. This can provide a test for models of nuclear reactions in stars and supernovae, and of the chemical evolution of the Universe. Our calculations can also be used in conjunction with measurements to extract changes in nuclear charge radii between isotopes.
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2

Dubeau, Jacques. "Isotope shift measurements of the stable krypton isotopes in natural and enriched concentrations". Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66154.

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3

Hassan, Rezaeian Nima. "A Precise Few-nucleon Size Difference by Isotope Shift Measurements of Helium". Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc804828/.

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We perform high precision measurements of an isotope shift between the two stable isotopes of helium. We use laser excitation of the 2^3 S_1-2^3 P_0 transition at 1083 nm in a metastable beam of 3He and 4He atoms. A newly developed tunable laser frequency selector along with our previous electro-optic frequency modulation technique provides extremely reliable, adaptable, and precise frequency and intensity control. The intensity control contributes negligibly to overall experimental uncertainty by stabilizing the intensity of the required sideband and eliminating the unwanted frequencies generated during the modulation of 1083 nm laser carrier frequency. The selection technique uses a MEMS based fiber switch and several temperature stabilized narrow band (~3 GHz) fiber gratings. A fiber based optical circulator and an inline fiber amplifier provide the desired isolation and the net gain for the selected frequency. Also rapid (~2 sec.) alternating measurements of the 2^3 S_1-2^3 P_0 interval for both species of helium is achieved with a custom fiber laser for simultaneous optical pumping. A servo-controlled retro-reflected laser beam eliminates residual Doppler effects during the isotope shift measurement. An improved detection design and software control makes negligible subtle potential biases in the data collection. With these advances, combined with new internal and external consistency checks, we are able to obtain results consistent with the best previous measurements, but with substantially improved precision. Our measurement of the 2^3 S_1-2^3 P_0 isotope shift between 3He and 4He is 31 097 535.2 (5) kHz. The most recent theoretic calculation combined with this measurement yields a new determination for nuclear size differences between 3He and 4He: ∆r_c=0.292 6 (1)_exp (8)_th (52)_exp fm, with a precision of less than a part in 〖10〗^4 coming from the experimental uncertainty (first parenthesis), and a part in 〖10〗^3 coming from theory. This value is consistent with electron scattering measurement, but a factor of 10 more precise. It is inconsistent (4 sigma) with a recent isotope shift measurement on another helium transition (2^1 S_0-2^3 S_1). Comparisons with ongoing muonic helium measurements may provide clues to the origin of what is currently called the proton puzzle: electronic and muonic measurements of the proton size do not agree. In the future, the experimental improvements described here can be used for higher precision tests of atomic theory and quantum electrodynamics, as well as an important atomic physics source of the fine structure constant.
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4

Nazé, Cédric. "Relativistic ab initio calculations of isotope shifts". Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209637.

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Quand les effets de la masse finie du noyau et de la distribution de charge spatiale sont pris en compte dans l’Hamiltonien décrivant un système atomique, les isotopes d’un élément, caractérisés par le même nombre de protons mais un nombre différent de neutrons, ont des niveaux d’énergie électronique différents. Le déplacement entre les niveaux d’énergie (pour un même état quantique) de deux isotopes différents est appelé le déplacement isotopique de niveau. De manière générale, on peut distinguer les déplacements isotopiques de champ (field shift) et les déplacements isotopiques de masse (mass shift). Pour les systèmes à plus d’un électron, le specific mass shift (SMS) apparaît. Grâce à sa faible pondération, le paramètre SMS peut être traité comme une perturbation de l’Hamiltonien ;son estimation fait appel aux intégrales de Vinti [5].

Dans un contexte relativiste, les programmes grasp2K [2] et mcdf-gme [1] permettent de résoudre les équations de Dirac-Fock associées à un état multiconfigurationnel et d’en fournir l’énergie ainsi que la représentation numérique des orbitales monoélectroniques. Nous avons créé et introduit dans le programme mcdf-gme une sous-routine capable d’estimer les paramètres de masse et de champ à partir des fonctions d’onde multiconfigurationnelles. Pour le programme GRASP2K, un module indépendant à été créé.

Par ailleurs, un opérateur plus complet impliquant des corrections en αZ, a été dérivé par Shabaev [4] et, de manière indépendante, par Palmer [3]. Nous avons déduit la forme tensorielle de cet opérateur et avons également implémenté dans les programmes cités ci-dessus le calcul de ses éléments de matrice.

Grâce à ces outils nous avons pu étudier la détérioration de l’opérateur d’énergie cinétique pour estimer le normal mass shift et travailler divers systèmes comme le lithium neutre et sa séquence isoélectronique. Par la suite nous avons également travaillé sur les séquences isoélectroniques du bore, du béryllium, du carbone et de l’azote. Enfin, certains effets isotopiques ont été étudiés pour plusieurs transitions dans le baryum neutre.

Bibliographie

[1] J. P. Desclaux. A relativistic multiconfiguration Dirac-Fock package. In E. Clementi, editor, Methods and Techniques in Computational Chemistry - vol. A :Small Systems of METTEC, page 253. STEF, Cagliari, 1993.

[2] P. Jönsson, X. He, C. Froese Fischer and I. P. Grant. The GRASP2K relativistic atomic structure package. Comput. Phys. Commun. 177 :597–622, 2007.

[3] C. W. P. Palmer. Reformulation of the theory of the mass shift. J. Phys. B :At. Mol. Phys. 20 :5987–5996, 1987.

[4] V. M. Shabaev and A. N. Artemyev. Relativistic nuclear recoil corrections to the energy levels of multicharged ions. J. Phys. B :At. Mol. Phys. 27 :1307–1314, 1994.

[5] J. P. Vinti. Isotope shift in magnesium. Phys. Rev. 56 :1120–1132, 1939.
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García, Guillermo. "An investigation into the limitations of the harmonic approximation in the calculation of vibrational isotopic shifts". [Fort Worth, Tex.] : Texas Christian University, 2008. http://etd.tcu.edu/etdfiles/available/etd-08132008-110703/unrestricted/Garcia.pdf.

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6

Burgett, Claire Margaret. "Green Sea Turtles (Chelonia mydas) in Bermuda Exhibit an Ontogenetic Diet Shift despite Overexploitation of Resources in their Developmental Habitat". FIU Digital Commons, 2017. http://digitalcommons.fiu.edu/etd/3267.

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Green sea turtles in Bermuda are overgrazing the seagrasses on which later life stages are thought to specialize. I hypothesized that larger green turtles in Bermuda would display individual diet specializations during seagrass scarcity. Stable isotope methods were used to determine the diet composition of green sea turtles from the Bermuda Platform as a function of size class and in turtles captured in successive years. Individual turtles had a wide range of diets, however, the variation in diets was driven by differences among size class rather than within the size classes of larger turtles, indicating that green turtles undergo a dietary ontogenetic shift during their residency on the Bermuda Platform and no clear specialization of diets among late-stage individuals. The apparent lack of dietary specialization of larger turtles indicates that older turtles are not diversifying their diets in response to the drastic reductions in seagrass in Bermuda.
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7

Carette, Thomas. "Isotope effects in atomic spectroscopy of negative ions and neutral atoms: a theoretical contribution". Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210024.

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Cette thèse est consacrée à l'étude des effets isotopiques dans les atomes neutres et ions négatifs. En particulier, nous ciblons notre recherche sur le calcul ab initio des déplacements isotopiques (DI) sur les électroaffinités des éléments des blocs p des deuxième et troisième périodes (B à F et Al à Cl). Ces derniers sont les systèmes les plus susceptibles d'être l'objet d'études expérimentales de haute précision.

Le premier chapitre se concentre sur une étude didactique du problème atomique et des effets isotopiques. Nous concluons par une description détaillée des motivations de notre thèse.

Le second chapitre présente le modèle Hartree-Fock (HF) et son extension multi-configurationelle (MCHF). Nous y énonçons le théorème de Brillouin et sa généralisation à un ansatz MCHF. Pour ce faire, nous formulons de manière originale le principe d'invariance d'une fonction d'onde CAS (Complete Active Set) par rapport aux rotations d'états d'orbitales. De cette formulation, nous caractérisons la famille des solutions CAS n'interagissant pas avec une fonction d'état de configuration (CSF) particulière et démontrons sa multiplicité. Finalement, nous appliquons notre technique d'analyse à l'étude de modèles concrets et prédisons l'apparition de minima locaux correspondant à chacune de ces solutions GBT. Introduisant le concept de quasi-symétrie de la fonctionnelle d'énergie, nous expliquons l'origine de fortes perturbations du "coeur" atomique dans des modèles particuliers.

Les troisième et quatrième chapitres fournissent les outils méthodologiques de base utilisés dans la deuxième partie de notre thèse qui présente des résultats quantitatifs originaux.

Le cinquième chapitre traite des DI et structures hyperfines des termes les plus bas de S, S-, Cl, Cl-, Si et Si-.

Dans le sixième chapitre, nous rapportons un profond désaccord entre théorie et expérience au sujet de la structure hyperfine de transitions de l'azote dans le infrarouge lointain. Nous montrons que les simulations basées sur nos valeurs de constantes isotopiques sont compatibles avec les spectres enregistrés moyennant une réassignation des raies faibles à des signaux de "cross-overs". Sur cette base, nous déduisons un nouvel ensemble de constantes hyperfines pour les états considérés, en bon accord avec nos valeurs théoriques, en nous basant uniquement sur les données expérimentales.

Le septième chapitre est une étude globale des configurations de plus basse énergie du C et C- (i.e. tous les états liés de ce dernier). Par une étude détaillée de nos incertitudes, nous obtenons des estimations très fiables et de grande précision pour un ensemble de propriétés. En particulier, nous présentons les valeurs de structure fine et hyperfine du C-, ainsi que les probabilités de transitions intra-configurationelles fournissant une base solide pour l'étude spectroscopique de ce système.

Dans le huitième chapitre, nous étudions la périodicité du déplacement spécifique de masse sur l'électroaffinité dans le Tableau Périodique des Eléments. Nous avançons les contributions dominantes qui interviennent dans cette grandeur et analysons les principales limitations des techniques de calcul actuelles dans ce contexte.

Nous présentons nos conclusions générales et les perspectives de notre travail dans le neuvième chapitre.


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Evans, Thomas M. "Assessing Food and Nutritional Resources of Native and Invasive Lamprey Larvae Using Natural Abundance Isotopes". The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343410278.

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9

Beerwerth, Randolf [Verfasser], Stephan [Gutachter] Fritzsche, J. Gutachter] Bieron e Tomas [Gutachter] [Brage. "Electron correlation in relativistic multiconfiguration calculations of isotope shift parameters, hyperfine coupling constants and atomic processes / Randolf Beerwerth ; Gutachter: Stephan Fritzsche, J. Bieron, Tomas Brage". Jena : Friedrich-Schiller-Universität Jena, 2019. http://d-nb.info/1206542586/34.

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Kurth, Benjamin Neal. "Trophic Ecology and Habitat Use of Atlantic Tarpon (Megalops atlanticus )". Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6531.

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Fish can have complex life histories and use multiple habitats and resources throughout their life span. Consequently, their life histories are often poorly understood. The Atlantic Tarpon, Megalops atlanticus, is a large, typically migratory, elopomorph fish that is both ecologically and economically important. Atlantic Tarpon are under threat due to regional exploitation, loss of natal and juvenile habitat, poor water management, and offshore impacts. In addition, little is known about its lifelong habitat and resource use. In Chapter 1, I used stable isotope analysis of eye lens δ13C and δ15N values to explore patterns in trophic history and habitat use of 16 Atlantic Tarpon from West-Central Florida and Louisiana. The stable isotope chronologies showed 100% use of backcountry habitats during the early life history and an ontogenetic habitat shift to coastal waters at approximately 10 years of age and 140 cm total length. During the coastal phase Atlantic Tarpon displayed among-individual variability and within-individual consistency in basal resource use. In Chapter 2, mark-recapture data from a multi-year genetic tagging program were used to investigate survival and growth rates, ontogenetic habitat use, and migration of juvenile Atlantic Tarpon in Florida. The study found that juvenile Atlantic Tarpon take approximately 10 years to reach the length associated with maturity, and appear to have a high survival rate (~80%), possibly due to effective use of habitats with reduced competition and predation. Atlantic Tarpon underwent several ontogenetic habitat shifts throughout the juvenile phase. In addition, juvenile Atlantic Tarpon did not migrate long distances but instead showed fidelity to systems wherein only short movements were needed to shift habitat types. This work serves to fill critical gaps in our knowledge of Atlantic Tarpon life history and may aid in better management and conservation of the species.
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Libri sul tema "Isotope shift"

1

Suryanarayana, M. V. Experimental and theoretical investigations on isotope selective excitation in multi-step laser photoionisation schemes: A spectral simulation approach. Mumbai: Bhabha Atomic Research Centre, 2001.

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Köhler-Langes, Florian. The Electron Mass and Calcium Isotope Shifts. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50877-1.

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Cooke, Justin. Isotope shifts and hyperfine structure measurements of refractory elements. Birmingham: University of Birmingham, 1994.

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Cooke, Justin. Isotope shifts and hyperfine structure measurements of refractory elements. Birmingham: University of Birmingham, 1996.

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Hayes, Gillian M. Laser spectroscopical study of isotope shifts in natural gadolinium and radioactive samarium. Birmingham: University of Birmingham, 1986.

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Theodossiou, Theodossis. High resolution laser spectroscopic study of hyperfine structure and isotope shifts in gadolinium. Birmingham: University of Birmingham, 1995.

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Pihlaja, Kalevi. Carbon-13 NMR chemical shifts in structural and stereochemical analysis. New York: VCH, 1994.

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U, Fleischer, a cura di. Deuterium and shift calculation. Berlin: Springer-Verlag, 1991.

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Isotope Shifts in Atomic Spectra. Springer, 2013.

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Gupta, Vandana, Mukesh Jain e Manfred Dieter Lechner. Chemical Shifts and Coupling Constants for Hydrogen-1. Springer, 2010.

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Capitoli di libri sul tema "Isotope shift"

1

Godefroid, M., N. Vaeck e Jørgen E. Hansen. "Isotope Shift MCHF Calculations in Strontium". In Numerical Determination of the Electronic Structure of Atoms, Diatomic and Polyatomic Molecules, 269–74. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2329-4_16.

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Limbach, Hans-Heinrich. "Dynamic NMR Spectroscopy in the Presence of Kinetic Hydrogen/Deuterium Isotope Effects". In Deuterium and Shift Calculation, 63–164. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75932-1_2.

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Hanashima, Shinya, e Yoshiki Yamaguchi. "Indirect Detection of Hydroxy Proton Exchange Through Deuterium-Induced 13C-NMR 13C-NMR Isotope shift Isotope Shifts". In Glycoscience: Biology and Medicine, 129–35. Tokyo: Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54841-6_100.

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4

Martin, Maryvonne L., e Gérard J. Martin. "Deuterium NMR in the Study of Site-Specific Natural Isotope Fractionation (SNIF-NMR)". In Deuterium and Shift Calculation, 1–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75932-1_1.

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5

Puchalski, Mariusz, e Krzysztof Pachucki. "Nuclear structure effects in the isotope shift with halo nuclei". In Laser 2009, 35–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12286-6_4.

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6

Drake, G. W. F., e Z. C. Yan. "Studies of light halo nuclei by the isotope shift method". In TCP 2006, 141–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-73466-6_18.

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7

Tino, G. M., K. Ernst, A. Sasso e M. Inguscio. "Measurement of Isotope Shift in Optical Transitions of Atomic Oxygen". In Frequency Standards and Metrology, 469–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74501-0_102.

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8

Iimura, H., Y. Ishida, M. Koizumi, T. Shibata, N. Shinohara, T. Horiguchi e H. A. Schuessler. "Hyperfine structure and isotope shift measurements of long-lived La isotopes by collinear laser spectroscopy". In Exotic Nuclei and Atomic Masses, 86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55560-2_26.

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9

Köhler-Langes, Florian. "Probing the Isotope Shift: $$\varDelta g=g({}^{40}\mathrm{Ca}^{17+})-g(^{48}\mathrm{Ca}^{17+})$$ Δ g = g ( 40 Ca 17 + ) - g ( 48 Ca 17 + )". In The Electron Mass and Calcium Isotope Shifts, 135–45. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50877-1_6.

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10

Gallo, C. F., L. R. Whitney e P. J. Walsh. "Excitonic Theory of High Temperature Oxide Superconductors and the Lack of an Isotope Shift". In Novel Superconductivity, 385–94. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1937-5_42.

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Atti di convegni sul tema "Isotope shift"

1

OTTEN, E. W. "THE ISOTOPE SHIFT". In The Gregory Breit Centennial Symposium. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811530_0004.

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2

Lepland, Aivo, Karen Bakakas, Mathieu Moussavou, Timmu Kreitsmann, Kärt Paiste, Kaarel Mänd, Yulia Deines, Aleksander Romashkin, Anthony Prave e Kalle Kirsimäe. "Lomagundi-Jatuli Carbon Isotope Excursion – Isotopic Shift Happens". In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.1460.

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3

Zhao, Ping, J. R. Lawall e F. M. Pipkin. "High precision isotope shift measurement in helium". In Atomic physics 12. AIP, 1991. http://dx.doi.org/10.1063/1.40979.

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4

Backe, H., B. Fricke, D. Habs, K. Hellmann, M. Hies, Ch Illgner, H. Kunz et al. "Isotope shift measurements at the 242fAm fission isomer". In The 7th international symposium: Resonance ionization spectroscopy 1994. AIP, 1995. http://dx.doi.org/10.1063/1.47612.

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5

Lu, Yi-qun, Ma Jun, J. S. Zhang, Y. C. Zhang, M. G. Gao e Y. H. Liu. "Isotope shift measurement of autoionization Rydberg states of Sm". In Resonance ionization spectroscopy 1996: Eighth international symposium. AIP, 1997. http://dx.doi.org/10.1063/1.52169.

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6

Katoh, Atsushi, Kuniyuki Kitagawa e Ashwani Gupta. "Examination of Methane-Hydrogen Mixture Flame Using Isotope Shift/PLIF Spectroscopy". In 44th AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-376.

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Katoh, Atsushi, Hiroyuki Oyama, Kuniyuki Kitagawa e Ashwani Gupta. "Isotope Shift/Planar Laser Induced Fluorescence Diagnostics for Examining Hydrogen-Methane Flames". In 43rd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-376.

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8

Robinson, S. M., Scott D. Kiff, Eric D. Ashbaker, Sarah E. Bender, Eric Flumerfelt, Matthew Salvitti, James Borgardt e Mitchell L. Woodring. "Effects of high count rate and gain shift on isotope identification algorithms". In 2007 IEEE Nuclear Science Symposium Conference Record. IEEE, 2007. http://dx.doi.org/10.1109/nssmic.2007.4437211.

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9

Barzakh, A. E., I. Ya Chubukov, D. V. Fedorov, V. N. Panteleev, M. D. Seliverstov e Yu M. Volkov. "Application of the laser ion source for isotope shift and hyperfine structure investigations". In EXOTIC NUCLEI AND ATOMIC MASSES. ASCE, 1998. http://dx.doi.org/10.1063/1.57313.

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ZOU, WEI, GIANLUCA COLÒ, PIER FRANCESCO BORTIGNON, ZHONGYU MA e HIROYUKI SAGAWA. "THE EFFECT OF THE TENSOR FORCE ON SINGLE-PARTICLE STATES AND ON THE ISOTOPE SHIFT". In Proceedings of the International Symposium on the ISPUN07. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812776150_0073.

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Rapporti di organizzazioni sul tema "Isotope shift"

1

Schuessler, H. A. Hyperfine structure and isotope shift measurements of short-lived elements by laser spectroscopy: Final report. Office of Scientific and Technical Information (OSTI), aprile 1989. http://dx.doi.org/10.2172/5762770.

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2

Reinhard, P. G., e H. Flocard. Nuclear effective forces and isotope shifts. Office of Scientific and Technical Information (OSTI), novembre 1994. http://dx.doi.org/10.2172/10195736.

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3

Joensson, P., e C. F. Fischer. MCHF calculations of isotope shifts; I program implementation and test runs II large-scale active space calculations. Office of Scientific and Technical Information (OSTI), marzo 1994. http://dx.doi.org/10.2172/10156988.

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