Literatura científica selecionada sobre o tema "Atomes neutres"
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Artigos de revistas sobre o assunto "Atomes neutres"
Atiyah, M. F., e N. S. Manton. "Complex geometry of nuclei and atoms". International Journal of Modern Physics A 33, n.º 24 (30 de agosto de 2018): 1830022. http://dx.doi.org/10.1142/s0217751x18300223.
Texto completo da fonteNaghiyev, T. G. "Neutron-alpha reactions in nano α-Si3N4 particles by neutrons". Modern Physics Letters A 36, n.º 24 (10 de agosto de 2021): 2150181. http://dx.doi.org/10.1142/s0217732321501819.
Texto completo da fonteMason, T. E., e A. D. Taylor. "Neutron Scattering in Materials Research". MRS Bulletin 24, n.º 12 (dezembro de 1999): 14–16. http://dx.doi.org/10.1557/s0883769400053665.
Texto completo da fonteMorris, Elizabeth M., e J. David Cooper. "Density measurements in ice boreholes using neutron scattering". Journal of Glaciology 49, n.º 167 (2003): 599–604. http://dx.doi.org/10.3189/172756503781830403.
Texto completo da fonteRoberts, Joyce A. "The Manuel Lujan Jr. Neutron Scattering Center". MRS Bulletin 22, n.º 9 (setembro de 1997): 42–46. http://dx.doi.org/10.1557/s0883769400033996.
Texto completo da fonteDlougach, Eugenia, Mikhail Shlenskii e Boris Kuteev. "Neutral Beams for Neutron Generation in Fusion Neutron Sources". Atoms 10, n.º 4 (25 de novembro de 2022): 143. http://dx.doi.org/10.3390/atoms10040143.
Texto completo da fontePylypchuk, Ie V., V. O. Kovach, Anna V. Iatsyshyn, O. V. Farrakhov, V. N. Bliznyuk e V. O. Kutsenko. "Immobilization of boronic acid derivative onto the magnetic Gd-containing composites". IOP Conference Series: Earth and Environmental Science 1049, n.º 1 (1 de junho de 2022): 012014. http://dx.doi.org/10.1088/1755-1315/1049/1/012014.
Texto completo da fonteLiebschner, Dorothee, Pavel V. Afonine, Nigel W. Moriarty, Paul Langan e Paul D. Adams. "Evaluation of models determined by neutron diffraction and proposed improvements to their validation and deposition". Acta Crystallographica Section D Structural Biology 74, n.º 8 (24 de julho de 2018): 800–813. http://dx.doi.org/10.1107/s2059798318004588.
Texto completo da fonteLucas, G. E., G. R. Odette e A. F. Rowcliffe. "Innovations in Testing Methodology for Fusion Reactor Materials Development". MRS Bulletin 14, n.º 7 (julho de 1989): 29–35. http://dx.doi.org/10.1557/s0883769400062138.
Texto completo da fonteMeilleur, Flora, Leighton Coates, Matthew Cuneo, Andrey Kovalevsky e Dean Myles. "The Neutron Macromolecular Crystallography Instruments at Oak Ridge National Laboratory: Advances, Challenges, and Opportunities". Crystals 8, n.º 10 (11 de outubro de 2018): 388. http://dx.doi.org/10.3390/cryst8100388.
Texto completo da fonteTeses / dissertações sobre o assunto "Atomes neutres"
Schlosser, Nicolas. "Etude et réalisation de micro-pièges dipolaires optiques pour atomes neutres". Phd thesis, Université Paris Sud - Paris XI, 2001. http://tel.archives-ouvertes.fr/tel-00001195.
Texto completo da fontel'implémentation de portes logiques quantiques. Dans ce contexte, cette étude
porte sur la réalisation d'un piège dipolaire optique de si petite taille qu'il
ne puisse contenir qu'un atome unique. Pour cela, il est nécessaire de
focaliser très fortement un laser à l'endroit où l'on désire capturer les
atomes. L'expérience s'articule donc autour d'un objectif de microscope de
grande ouverture numérique, entièrement conçu et réalisé au laboratoire. Cette
optique est utilisée pour faire focaliser un laser au centre d'un piège
magnéto-optique, réservoir d'atomes froids alimentant le piège dipolaire ainsi
créé.
Le dispositif d'observation des atomes piégés est basé sur le même objectif,
qui collecte, avec une grande efficacité, la fluorescence des atomes piégés et
en fait l'image sur une caméra CCD ou une photodiode à avalanche. La résolution
spatiale du dispositif utilisant la caméra permet d'obtenir une image des
atomes capturés, alors que l'on utilise la rapidité de la photodiode à
avalanche pour les études de la dynamique du piège avec une bonne résolution
temporelle.
Après une description détaillée de ce dispositif expérimental, nous montrons
qu'il est possible de réaliser des micro-pièges dipolaires optiques, de
quelques microns cube et contenant une dizaine d'atomes. L'étude de la
dynamique de chargement et de la durée de vie de ces pièges révèle également la
présence de processus de collisions à deux corps. Nous montrons ensuite qu'en
diminuant le taux de chargement il est possible d'observer, en temps réel, un
atome unique piégé pendant quelques secondes. Dans ce régime, un processus de
"blocage collisionnel" limite ce nombre d'atome à un. Pour finir, nous
décrirons la mise en place d'un double piège dipolaire, dans lequel on peut
piéger un atome unique dans chaque site. Ce dispositif ouvre la voie vers
l'étude de l'interaction entre atomes piégés individuellement.
Beugnon, Jérôme. "Contrôle de l'état interne d'un atome unique piégé et expériences d'interférences à deux photons : vers l'information quantique avec des atomes neutres". Phd thesis, Université Paris Sud - Paris XI, 2007. http://tel.archives-ouvertes.fr/tel-00185446.
Texto completo da fonteKara, Abdelkader. "Contribution à l'étude expérimentale et théorique de la diffusion élastique d'atomes neutres par des surfaces périodiques et des surfaces avec des défauts isolés". Lille 1, 1985. http://www.theses.fr/1985LIL10031.
Texto completo da fonteKissami, Abdelhamid. "Etude des sections efficaces d'excitation (desexcitation) et des profils des raies par des atomes neutres et ionises". Orléans, 1990. http://www.theses.fr/1990ORLE2030.
Texto completo da fonteLoisel, Jean-Philippe. "Réalisation de sources lasers à l'état solide et observation du phénomène LIAD : application au développement d'une horloge optique à atomes neutres d'argent". Versailles-St Quentin en Yvelines, 2010. http://www.theses.fr/2010VERS0062.
Texto completo da fonteThe remarkable capabilities of laser cooling and trapping techniques for neutral atoms have led to great advances in the field of neutral atom-based frequency standards. Among the several atomic systems affording excellent prospects of high stability and accuracy in the optical region, the silver atom is regarded as one of the most promising candidates for an optical frequency standard. This thesis deals with the development of a clock based on neutral silver atoms. The Ag 4d105s2 S1/2 > 4d95s2 2D5/2 transition provides an attractive reference frequency for the following reasons : the 2D5/2 metastable level, which decays by emission of electric quadrupole radiation at 330. 5 nm, has an estimated lifetime of 0. 2 s, corresponding to an ultralow natural linewidth of only 0. 8 Hz. It’s therefore possible therefore to benefit from the long interaction time in an atomic fountain setup. Furthermore, the long-lived state is accessible with a two-photon transition at 661. 2 nm, providing a first-order Doppler-free interaction with atoms of all velocities. As an important technical aspect, the frequency needed to drive the clock transition and to cool the silver atoms (D2 line at 328 nm) can be provided by the same crystal Nd:YLF enable to generate both 1322 nm and 1312 nm. This work details especially the realization of the laser sources for both cooling silver atoms and driving the clock transition by diode-pumped Nd-YLF crystal and intracavity frequency doubling operation in two steps (second and fourth harmonic generation). In addition, the Lignt Induced Atomic Desorption (LIAD) phenomenon is described and observed as an interesting compromise in the case of an optical atomic clock conception
Petitjean, Luc. "Étude théorique et expérimentale des collisions entre atomes de Rydberg et cibles neutres (atomique ou moléculaire) à énergie thermique : transferts résonnants d'énergie interne". Paris 11, 1985. http://www.theses.fr/1985PA112108.
Texto completo da fonteThis thesis reports a study of the collisional behavior of atomic Rydberg states with atomic and molecular targets. These collisions are described within the frame of the Impulse Approximation (IA). Methods for the evaluation of the atomic form factor, the key step in the derivation of the cross-section, are proposed and discussed allowing numerous comparisons with experimental data. The quenching cross-sections of high rubidium Rydberg states by molecular perturbers (N₂, CO, NH₃, ND₃) are measured and compared to IA predictions. The influence of the molecular multipole moment as well as of ether relevant physical parameters (energy balance of the reaction) are clearly stated. In the case of dipole molecules the total depopulation is mainly governed by near-resonant energy transfer where the internal energy (atomic or rotational) lest by one colliding partner is gained by the ether. Finally, our theoretical approach is tentatively extended to low-lying excited states and compared to experimental results
Haas, Florian. "Creation of entangled states of a set of atoms in an optical cavity". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-00968861.
Texto completo da fonteGarnier, Philippe. "Etude de l'interaction entre l'exosphère de Titan et la magnétosphère kronienne, à l'aide des données de l'expérience MIMI (Magnetosphere Imaging Instrument) à bord de Cassini". Phd thesis, Toulouse 3, 2007. http://thesesups.ups-tlse.fr/109/.
Texto completo da fonteThe largest satellite of Saturn, Titan, has a nitrogen-rich atmosphere directly bombarded by magnetospheric energetic ions, due to its lack of a significant intrinsic magnetic field. Charge-exchange collisions between the cold neutrals of its exosphere (the upper part of the atmosphere) and the energetic ions from Saturn's magnetosphere produce then energetic neutral atoms (ENAs). The Ion and Neutral Camera (INCA), one of the three sensors that comprise the Magnetosphere Imaging Instrument (MIMI) on the Cassini spacecraft orbiting around Saturn, images these neutrals like photons, measures their fluxes and provides a powerful diagnostic of the interaction between Titan and the kronian magnetosphere. Our work during this PhD thesis was first to model the Titan exosphere, with both thermal and non thermal profiles. An ENA flux calculation model was then developed, compared to observations and completed with a study of the ENA absorption mechanisms. We have also performed a statistical analysis of the MIMI data during the Titan flybys and orbit crossings. Finally, an application on the icy satellite Rhea allowed to infer upper limits for its eventual exosphere
Mekkaoui, Mohamed. "Transport des atomes et des molécules dans les plasmas fluctuants de bord des machines de fusion". Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4784/document.
Texto completo da fonteEdge plasma of tokamaks manifests high level of fluctuations amplitude (>50%). It has been demonstrated that such a fluctuations affect significantly the transport of neutral particles, and in particular the slow particles as molecules and sputtered impurities. That is their penetration depth in the plasma is enhanced in the average. Then turbulent fluctuations are now implemented in the monte carlo transport code EIRENE used for the design of ITER
Leite, Carlos Alberto Faria. "Desaceleração e manipulação de átomos neutros". Universidade de São Paulo, 1992. http://www.teses.usp.br/teses/disponiveis/54/54132/tde-26082014-153955/.
Texto completo da fonteThis work describes the deceleration a sodium atoms beam by means of the Zeeman tuning technique. The deceleration process is studied in details and its demonstration is made using a single laser. We have studied and present the adiabatic following of the atoms along the magnetic field and its relevance to produce slow, high density, flux of neutral atoms. The atoms\' stopping position was varied, by changing the magnetic field profile, in a way to produce slows atoms outside the solenoid. The peculiar shape of the atomic spatial distribution of atoms at rest is explained, the focusing of atoms though a hexapole magnetic field is studied and the trapping of atoms in a magnetic trap is demonstrated
Livros sobre o assunto "Atomes neutres"
1964-, Newbury Nathan, Wieman C. E e American Association of Physics Teachers., eds. Trapping of neutral atoms. College Park, MD: American Association of Physics Teachers, 1998.
Encontre o texto completo da fonteAtomic hydrogen in the local universe. Groningen, The Netherlands: Rijksuniversiteit Groningen, 2000.
Encontre o texto completo da fonteP, Ozerov Ruslan, ed. Magnetic Neutron Diffraction. Boston, MA: Springer US, 1995.
Encontre o texto completo da fonteThe neutron and the bomb: A biography of Sir James Chadwick. Oxford: Oxford University Press, 1997.
Encontre o texto completo da fonteSmarandache, Florentin. Neutrosophic physics: More problems, more solutions, collection of papers. Hanko, Finland: North-European Scientific Publishers, 2010.
Encontre o texto completo da fonteMohd Nor bin Md Yusuf. The interaction of fast neutral atoms with metal surfaces. [s.l.]: typescript, 1989.
Encontre o texto completo da fonteJanot, Christian, Winfried Petry, Dieter Richter e Tasso Springer, eds. Atomic Transport and Defects in Metals by Neutron Scattering. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71007-0.
Texto completo da fonteDeLay, Glen Clark. Neutron placement with proton and positon. Lawndale, CA: DeLay's Printing, 2004.
Encontre o texto completo da fonteUnified field theory: Atomic nuclei, neutron stars, and black holes. Cookeville, TN: Tennessee Tech Printing Services Press, 2007.
Encontre o texto completo da fonteUnited States. National Aeronautics and Space Administration., ed. Surface conversion techniques for low energy neutral atom imagers: Final report. [Washington, DC: National Aeronautics and Space Administration, 1995.
Encontre o texto completo da fonteCapítulos de livros sobre o assunto "Atomes neutres"
Averyn, Viktar S. "Short Refresher of Radiobiology". In Nuclear and Radiological Emergencies in Animal Production Systems, Preparedness, Response and Recovery, 13–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-63021-1_2.
Texto completo da fonteMichaud, Georges, Georges Alecian e Jacques Richer. "Neutron Stars". In Atomic Diffusion in Stars, 259–70. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19854-5_14.
Texto completo da fonteRadzig, Alexandre A., e Boris M. Smirnov. "Energetics of Neutral Atoms". In Springer Series in Chemical Physics, 87–120. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82048-9_5.
Texto completo da fonteVorburger, A., e P. Wurz. "Lunar Atmosphere, Energetic Neutral Atoms". In Encyclopedia of Lunar Science, 1–6. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-05546-6_221-1.
Texto completo da fonteMissimer, J. "Neutral Currents in Muonic Atoms". In Fundamental Interactions in Low-Energy Systems, 115–25. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-4967-9_7.
Texto completo da fonteRadzig, Alexandre A., e Boris M. Smirnov. "Spectroscopic Characteristics of Neutral Atoms". In Springer Series in Chemical Physics, 147–257. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82048-9_7.
Texto completo da fonteAspect, Alain. "Laser Manipulation of Neutral Atoms". In NATO ASI Series, 193–206. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-1576-4_9.
Texto completo da fonteMetcalf, Harold J., e Peter van der Straten. "Magnetic Trapping of Neutral Atoms". In Graduate Texts in Contemporary Physics, 137–48. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1470-0_10.
Texto completo da fonteMetcalf, Harold J., e Peter van der Straten. "Optical Traps for Neutral Atoms". In Graduate Texts in Contemporary Physics, 149–64. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1470-0_11.
Texto completo da fonteEichler, Hans Joachim, Jürgen Eichler e Oliver Lux. "Laser Transitions in Neutral Atoms". In Lasers, 65–76. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99895-4_4.
Texto completo da fonteTrabalhos de conferências sobre o assunto "Atomes neutres"
Bergeman, Thomas, e Harold Metcalf. "Magnetic trapping of neutral atoms". In International Laser Science Conference. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/ils.1986.wf6.
Texto completo da fonteChu, Steven, Mark Kasevich, Kathryn Moler, Erling Riis e David Weiss. "Future of neutral atom clocks". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.wh1.
Texto completo da fonteOates, Chris, Zeb Barber, Jason Stalnaker, Chad Hoyt, Yann Le Coq e Leo Hollberg. "Optical Atomic Clocks Based Upon Neutral Atoms". In Laser Science. Washington, D.C.: OSA, 2007. http://dx.doi.org/10.1364/ls.2007.ltuh3.
Texto completo da fonteKetterle, Wolfgang. "Recent Advances in Bose-Einstein Condensation". In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.plen1.
Texto completo da fonteIdo, T., M. M. Boyd, A. D. Ludlow, T. Zelevinsky, S. Blatt, S. M. Foreman, M. Notcutt e J. Ye. "Optical atomic clocks based on ultracold neutral strontium atoms". In International Quantum Electronics Conference, 2005. IEEE, 2005. http://dx.doi.org/10.1109/iqec.2005.1561161.
Texto completo da fontePhillips, William D. "Laser cooling, stopping, and magnetic trapping of neutral atoms". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.wv3.
Texto completo da fonteMaruyama, Ippei, Osamu Kontani, Shohei Sawada, Osamu Sato, Go Igarashi e Masayuki Takizawa. "Evaluation of Irradiation Effects on Concrete Structure: Background and Preparation of Neutron Irradiation Test". In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98114.
Texto completo da fonteHolmgren, D. E., e D. F. Prelewitz. "Sodium core-excited fluorescence enhancement by charge transfer". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.thpo19.
Texto completo da fonteYanli, Xiong, Qiu Xiaopeng, Liu Shuhuan, Li Zhuoqi, Liu Shuangying, Ma Yong, Song Ci e Han Ning. "Simulation and Analysis of 4H-SiC-Based PiN Fast Neutron Detector With Polyethylene Converter Using Geant4". In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-92268.
Texto completo da fonteGattobigio, G. L., F. Michaud, G. Labeyrie, T. Pohl e R. Kaiser. "Long Range Interactions Between Neutral Atoms". In NON-NEUTRAL PLASMA PHYSICS VI: Workshop on Non-Neutral Plasmas 2006. AIP, 2006. http://dx.doi.org/10.1063/1.2387926.
Texto completo da fonteRelatórios de organizações sobre o assunto "Atomes neutres"
Ків, Арнольд Юхимович, Володимир Миколайович Соловйов e Sergey A. Tomilin. Formation of Si precipitates іn neutron irradiated Al. Видавничий відділ КДПУ, 2001. http://dx.doi.org/10.31812/0564/1027.
Texto completo da fonteHolden, T., J. Root e R. Hosbons. CWI1988-Andi-12 Neutron Diffraction of Axial Residual Strains in the Vicinity of a Girth Weld. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), abril de 1988. http://dx.doi.org/10.55274/r0011390.
Texto completo da fonteHill, C. Summary Report of the Third Research Coordination Meeting on Data for Atomic Processes of Neutral Beams in Fusion Plasma. IAEA Nuclear Data Section, junho de 2022. http://dx.doi.org/10.61092/iaea.twqe-92hz.
Texto completo da fonteHill, Christian. Data for Atomic Processes of Neutral Beams in Fusion Plasma. IAEA Nuclear Data Section, fevereiro de 2019. http://dx.doi.org/10.61092/iaea.19hv-wzn5.
Texto completo da fontePritchard, David E., e Wolfgang Ketterle. Experiments with Trapped Neutral Atoms. Fort Belvoir, VA: Defense Technical Information Center, março de 1996. http://dx.doi.org/10.21236/ada306690.
Texto completo da fonteKetterle, Wolfgang. Experiments With Trapped Neutral Atoms. Fort Belvoir, VA: Defense Technical Information Center, janeiro de 2010. http://dx.doi.org/10.21236/ada514076.
Texto completo da fonteKetterle, Wolfgang. Experiments with Trapped Neutral Atoms. Fort Belvoir, VA: Defense Technical Information Center, agosto de 2000. http://dx.doi.org/10.21236/ada381427.
Texto completo da fonteSaffman, Mark, e Thad Walker. Quantum Logic With Cold Neutral Atoms. Fort Belvoir, VA: Defense Technical Information Center, agosto de 2006. http://dx.doi.org/10.21236/ada454801.
Texto completo da fonteLee, Jongmin, Michael J. Martin, Yuan-Yu Jau, Ivan H. Deutsch e Grant W. Biedermann. A new approach to entangling neutral atoms. Office of Scientific and Technical Information (OSTI), novembro de 2016. http://dx.doi.org/10.2172/1333520.
Texto completo da fontePhillips, William D. Laser Cooling and Trapping of Neutral Atoms. Fort Belvoir, VA: Defense Technical Information Center, julho de 1992. http://dx.doi.org/10.21236/ada253537.
Texto completo da fonte