Academic literature on the topic 'Density of metastable atoms'

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Journal articles on the topic "Density of metastable atoms"

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Feng, P. X., D. Andruczyk, B. W. James, K. Takiyama, S. Namba, and T. Oda. "High-density metastable helium atoms produced by Penning-type discharges." Plasma Sources Science and Technology 12, no. 2 (2003): 142–47. http://dx.doi.org/10.1088/0963-0252/12/2/303.

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Do, Hoang Tung, Vitezslav Stranak, and Rainer Hippler. "Time resolved tunable diode laser absoption spectroscopy of dual High Power Impulse Magnetron Sputtering discharges." International Journal of Modern Physics: Conference Series 32 (January 2014): 1460337. http://dx.doi.org/10.1142/s2010194514603378.

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Time-resolved measurements have been performed during dual High Power Impulse Magnetron Sputtering (dual-HiPIMS) with two cathodes in a closed magnetic field configuration. The dual-HiPIMS system, operated at a repetition frequency f = 100 Hz and duty cycle of 1 %, was equipped with two different metallic targets (Ti, Cu). The effect of a delay between subsequent pulses on argon excited atom density and temperature was investigated by means of tunable diode laser absorption spectroscopy. It is shown that the peak densities of pulses vary strongly with the delay. We observed an enhancement of m
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Иванов, В. А. "Барьерный разряд в гелии при средних давлениях. Спектроскопия послесвечения". Журнал технической физики 126, № 3 (2019): 247. http://dx.doi.org/10.21883/os.2019.03.47361.185-18.

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AbstractThe decaying plasma that is produced by the dielectric barrier discharge (DBD) in helium across a cylindrical tube at a pressure of helium 1–40 Тorr has been spectroscopically investigated. The radical difference between the nature of the barrier discharge afterglow and longitudinal pulse discharge afterglow at the same plasma electron density has been demonstrated. It has been shown that this effect is due to the abnormally low density of metastable He(2^1 S _0, ^3 S _1) atoms in the plasma that is produced by DBD. In such an experiment, it is possible to observe a purely recombinatio
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Иванов, В. А., та Ю. Э. Скобло. "Гелиевое послесвечение без метастабильных частиц". Журнал технической физики 127, № 12 (2019): 890. http://dx.doi.org/10.21883/os.2019.12.48681.156-19.

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The results of a spectroscopic study of the afterglow of a pulsed barrier discharge in helium with a small admixture of neon, which creates a plasma with a low density of metastable particles, are discussed. The early stage of the afterglow of such a discharge is free of processes involving metastables and has a purely recombination nature. The characteristics of the afterglow are interpreted on the basis of the model taking into account vibrational kinetics and dissociative recombination of molecular ions. A comparison of experimental data and model solutions for collisional-radiative recombi
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Xue, J., J. E. Cooley, and R. S. Urdah. "Density of metastable atoms in the plume of a low-pressure argon microplasma." Journal of Physics D: Applied Physics 45, no. 36 (2012): 365201. http://dx.doi.org/10.1088/0022-3727/45/36/365201.

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Franek, James, Samuel Nogami, Mark Koepke, Vladimir Demidov, and Edward Barnat. "A Computationally Assisted Ar I Emission Line Ratio Technique to Infer Electron Energy Distribution and Determine Other Plasma Parameters in Pulsed Low-Temperature Plasma." Plasma 2, no. 1 (2019): 65–76. http://dx.doi.org/10.3390/plasma2010007.

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In the post-transient stage of a 1-Torr pulsed argon discharge, a computationally assisted diagnostic technique is demonstrated for either inferring the electron energy distribution function (EEDF) if the metastable-atom density is known (i.e., measured) or quantitatively determining the metastable-atom density if the EEDF is known. This technique, which can be extended to be applicable to the initial and transient stages of the discharge, is based on the sensitivity of both emission line ratio values to metastable-atom density, on the EEDF, and on correlating the measurements of metastable-at
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Ricard, A., C. Barbeau, A. Besner, et al. "Production of metastable and resonant atoms in rare-gas (He, Ne, Ar) radio-frequency and microwave-sustained discharges." Canadian Journal of Physics 66, no. 8 (1988): 740–48. http://dx.doi.org/10.1139/p88-122.

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Radial density distributions of excited atoms in plasma columns of helium, neon, and argon, sustained by a travelling electromagnetic surface wave, are examined as a function of frequency over the range 200 kHz – 2450 MHz. This investigation is conducted using an end-on measurement method. At low frequencies (<50 MHz), these radial distributions show a maximum at the axis (J0 Bessel-like behavior), whereas as frequency is increased beyond 50 MHz up to 2450 MHz, the radial distributions flatten and finally exhibit a minimum at the axis with a maximum close to the tube wall. Comparison with a
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Xian-Ping, Feng, D. Andruczyk, B. W. James, K. Takiyama, S. Namba, and T. Oda. "Effects of discharge current and voltage on the high density of metastable helium atoms." Chinese Physics 12, no. 5 (2003): 495–501. http://dx.doi.org/10.1088/1009-1963/12/5/306.

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Tadokoro, Masahiro, Hajime Hirata, Nobuhiko Nakano, Zoran Lj Petrović, and Toshiaki Makabe. "Two-dimensional density distribution of metastable atoms in an inductively coupled plasma in Ar." Physical Review E 58, no. 6 (1998): 7823–30. http://dx.doi.org/10.1103/physreve.58.7823.

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Khan, Muhammad Ibrahim, Muhammad Aslam Khan, Muhammad Iqbal Zaman, Najeeb ur Rehman, Asad Masood, and Naqib Ullah. "Enhancement of O-atom density through collisions with Ne by laser-produced plasma in Ne–O2 gas mixtures and possible energy transfer mechanism." International Journal of Modern Physics B 33, no. 18 (2019): 1950198. http://dx.doi.org/10.1142/s0217979219501984.

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Laser-produced plasma in Ne and O2 gases and Ne–O2 gas mixture with different O2 fractions have been investigated. The plasma were produced by focusing a laser beam of 5 ns pulse duration from a Nd:YAG laser ([Formula: see text] = 1064 nm) through a lens of 5 cm focal length into the chamber filled with different gas species at different pressures. Possible enhancement in O-atom densities through collisions with metastable Ne atoms by the laser-created plasma in Ne–O2 gas mixtures and possible energy transfer mechanism was studied. Study of energy transfer through collisions was carried out by
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Dissertations / Theses on the topic "Density of metastable atoms"

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Blessington, Jon C. "Measurements of metastable atom density using energies and densities of energetic "fast" electrons detected in the electron energy distribution function associated with the afterglow plasma produced by a radio frequency inductively coupled plasma helium discharge." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5214.

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Thesis (M.S.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains v, 36 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 21).
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Simonet, Juliette. "Optical traps for Ultracold Metastable Helium atoms." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00651592.

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Les thématiques abordées dans ce mémoire illustrent deux spécificités des gaz ultrafroids d'Hélium métastable : la possibilité de comparer les résultats expérimentaux à des évaluations théoriques précises (niveaux d'énergie, potentiels d'interaction) et une méthode de détection originale fournie par les ionisations Penning. Nous présentons la construction et la caractérisation d'un nouveau piège magnétique offrant un large accès optique et permettant ainsi de combiner la production d'un condensat de Bose-Einstein et son chargement in situ dans un réseau optique 3D. Les fondements théoriques de
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Carcy, Cécile. "Investigation of the Mott transition with metastable Helium atoms." Thesis, Université Paris-Saclay (ComUE), 2019. https://pastel.archives-ouvertes.fr/tel-02890916.

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Dans cette thèse, nous transférons un condensat de Bose-Einstein d'Hélium métastable dans un potentiel cubique 3D (réseau optique). Ce système constitue une réalisation expérimentale de l'Hamiltonien de Bose-Hubbard où interviennent deux échelles d'énergie: la force d'interaction entre les atomes U et l'énergie cinétique J. Suivant le rapport U/J, l'état fondamental de ce système est soit un superfluide (SF), soit un isolant de Mott (MI). Ces deux phases sont séparées par une transition appelée transition de Mott dont nous avons étudié quelques propriétés au cours de cette thèse. Grâce à l'uti
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Grünert, Jan. "Ultracold metastable calcium atoms in a bichromatic magneto-optical trap." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965196445.

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Hansen, Dirk. "Collisional properties of metastable calcium atoms in a miniaturized ioffe trap." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=978949374.

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Cop, Christian [Verfasser], Reinhold [Akademischer Betreuer] Walser, and Birkl [Akademischer Betreuer] Gerhard. "Cold collisions of metastable neon atoms / Christian Cop ; Reinhold Walser, Birkl Gerhard." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2017. http://d-nb.info/1135386013/34.

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Schneble, Dominik. "Trapping and manipulation of laser cooled metastable argon atoms at a surface." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964751623.

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Konishi, Hideki. "Collisional stability of localized metastable ytterbium atoms immersed in a Fermi sea of lithium." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225386.

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Barrios, Andrés J. "Yield of metastable atoms from a rare gas discharge in a longitudinal magnetic field." FIU Digital Commons, 1993. http://digitalcommons.fiu.edu/etd/1415.

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Atomic beam experiments are limited by intensity. Intensity limitations are specially critical in the measurements of metastable atoms, since their relative population is several order of magnitude smaller than the beam population. This thesis provides a method for increasing the intensity of metastable argon and neon beams effusing from a hot cathode, glow discharge by use of a longitudinal magnetic field. The argon and neon metastable atom intensities have been measured for a range of discharge pressure, voltage, and current for a magnetic field strengths from 0 to 31 mT. For both argon and
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Yamaguchi, Atsushi. "Metastable State of Ultracold and Quantum Degenerate Ytterbium Atoms: High-Resolution Spectroscopy and Cold Collisions." 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/124352.

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Books on the topic "Density of metastable atoms"

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Cousins, Andrew Timothy. Electron scattering from metastable rare gas atoms. University of Manchester, 1997.

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Cousins, Andrew Timothy. Elec tron scattering from metastable rare gas atoms. Universityof Manchester, 1997.

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March, Norman H. Electron density theory of atoms and molecules. Academic Press, 1992.

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Weitao, Yang, ed. Density-functional theory of atoms and molecules. Oxford University Press, 1989.

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Gidopoulos, N. I. The Fundamentals of Electron Density, Density Matrix and Density Functional Theory in Atoms, Molecules and the Solid State. Springer Netherlands, 2003.

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Gidopoulos, N. I., and S. Wilson, eds. The Fundamentals of Electron Density, Density Matrix and Density Functional Theory in Atoms, Molecules and the Solid State. Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0409-0.

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Mazziotti, David A., ed. Reduced-Density-Matrix Mechanics: With Application to Many-Electron Atoms and Molecules. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/0470106603.

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Snyder, Aaron. The dependence of atomic oxygen undercutting of protected polyimide Kapton® H upon defect size. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Parr, Robert G., and Yang Weitao. Density-Functional Theory of Atoms and Molecules. Oxford University Press, 1995. http://dx.doi.org/10.1093/oso/9780195092769.001.0001.

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This book is a rigorous, unified account of the fundamental principles of the density-functional theory of the electronic structure of matter and its applications to atoms and molecules. Containing a detailed discussion of the chemical potential and its derivatives, it provides an understanding of the concepts of electronegativity, hardness and softness, and chemical reactivity. Both the Hohenberg-Kohn-Sham and the Levy-Lieb derivations of the basic theorems are presented, and extensive references to the literature are included. Two introductory chapters and several appendices provide all the
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Albus, Alexander P. Immersion energies of atoms in jellium. 1999.

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Book chapters on the topic "Density of metastable atoms"

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Ghosh, Swapan K., and Robert G. Parr. "Improved Thomas-Fermi Theory for Atoms." In Density Matrices and Density Functionals. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3855-7_36.

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Sukumar, N. "Atoms in Molecules." In A Matter of Density. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118431740.ch4.

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Chelikowsky, J. R., Y. Saad, and I. Vasiliev. "Atoms and Clusters." In Time-Dependent Density Functional Theory. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-35426-3_17.

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Mahan, Gerald D., and K. R. Subbaswamy. "Atoms and Molecules." In Local Density Theory of Polarizability. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2486-5_4.

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Sleator, T., O. Carnal, A. Faulstich, and J. Mlynek. "Interferometry with Metastable Rare Gas Atoms." In Quantum Measurements in Optics. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3386-3_3.

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Gázquez, José L., Marcelo Galván, Elba Ortiz, and Alberto Vela. "Atoms and Ions in the Limit of Large Nuclear Charge." In Density Matrices and Density Functionals. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3855-7_35.

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Bracci, L., and E. Zavattini. "Lifetime of Metastable Muonic Helium." In Electromagnetic Cascade and Chemistry of Exotic Atoms. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-3701-8_15.

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Su, D. R. "Pauli Principle for Heliumlike Atoms." In Density Functional Methods in Chemistry. Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4612-3136-3_29.

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Blum, Karl. "Radiation from Polarized Atoms. Quantum Beats." In Density Matrix Theory and Applications. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-4931-1_5.

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Blum, Karl. "Radiation from Polarized Atoms. Quantum Beats." In Density Matrix Theory and Applications. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20561-3_5.

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Conference papers on the topic "Density of metastable atoms"

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Park, Min, Hong-Young Chang, Shin-Jae You, and Jung-Hyung Kim. "Evolution of Ar metastable atom density with electron density in Ar ICP discharge." In 2012 IEEE 39th International Conference on Plasma Sciences (ICOPS). IEEE, 2012. http://dx.doi.org/10.1109/plasma.2012.6383398.

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Baldwin, Kenneth G., Linda J. Uhlmann, Robert G. Dall, Andrew G. Truscott, and Stephen J. Buckman. "A high density metastable helium MOT for electron-atom collision studies." In International Quantum Electronics Conference. OSA, 2004. http://dx.doi.org/10.1364/iqec.2004.itua3.

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Franek, J. B., S. H. Nogami, M. E. Koepke, V. I. Demidov, and E. V. Barnat. "Correlating metastable-atom density, reduced electric field, and electron energy distribution in a 1-torr argon discharge." In 2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS). IEEE, 2014. http://dx.doi.org/10.1109/plasma.2014.7012286.

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Taichi Nagahama, Susumu Okayama, Hideki Motomura, and Masafumi Jinno. "Measurement of spatio-temporal Ar metastable atom density and emission spectrum in an Ar low-frequency microplasma jet." In 2009 IEEE 36th International Conference on Plasma Science (ICOPS). IEEE, 2009. http://dx.doi.org/10.1109/plasma.2009.5227300.

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GRÜNERT, JAN, and ANDREAS HEMMERICH. "ULTRACOLD METASTABLE CALCIUM ATOMS." In Proceedings of the 6th Symposium. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777713_0039.

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Kim, Y. H., Y. J. Hong, P. Y. Oh, and Eun Ha Choi. "Spatiotemporal behavior of excited xenon atom density in the IS5 metastable state according to new type double X-Y electrodes structure in alternating currentplasma display panel." In 2010 IEEE 37th International Conference on Plasma Sciences (ICOPS). IEEE, 2010. http://dx.doi.org/10.1109/plasma.2010.5534009.

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Jeremie, L., M. Allard, W. Matthew, et al. "Photoassociation of ultracold metastable helium atoms." In 2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665). IEEE, 2003. http://dx.doi.org/10.1109/eqec.2003.1314135.

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Rooijakkers, W., W. Hogervorst, and W. Vassen. "a Trap for Metastable Helium Atoms." In EQEC'96. 1996 European Quantum Electronic Conference. IEEE, 1996. http://dx.doi.org/10.1109/eqec.1996.561585.

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Wucher, A., and W. Berthold. "Metastable excitation of sputtered silver atoms." In Resonance ionization spectroscopy 1996: Eighth international symposium. AIP, 1997. http://dx.doi.org/10.1063/1.52141.

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Byron, L. J., O. Turazza, R. G. Dall, A. G. Truscott, and K. G. H. Baldwin. "Laser Spectroscopy of Ultracold Metastable Helium Atoms." In Frontiers in Optics. OSA, 2006. http://dx.doi.org/10.1364/fio.2006.fthq7.

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Reports on the topic "Density of metastable atoms"

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Field, Robert W. Metastable Electronically Excited Atoms and Molecules: Excitation Transfer in Slow Collisions, Probed by Means of a Counter-Rotating Supersonic Jet. Defense Technical Information Center, 2012. http://dx.doi.org/10.21236/ada582459.

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Pinkerton, A. Alan, Vladimir V. Zhurov, and Christopher G. Gianopoulos. Experimental electron density distribution in actinide compounds - an experimental atoms in molecules (AIM) approach. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1542110.

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Harris, S. E., and J. F. Young. Studies on production of metastable core-excited atoms by laser-produced x-rays. Final report, 1 October 1984-30 September 1985. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/5770420.

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