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Journal articles on the topic 'Metastable neon'

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Published: 4 June 2021

Last updated: 20 February 2023

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1

Serxner, D., R. L. Smith, and K. R. Hess. "Investigations of a Metastable Dependence on the Ionization of Sputtered Species in Neon Glow Discharges." Applied Spectroscopy 45, no. 10 (December 1991): 1656–64. http://dx.doi.org/10.1366/0003702914335300.

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Optical investigations of a low-pressure (0.3–4.0 Torr), low-current (1–4 mA), coaxial geometry glow discharge operating with neon as the fill gas are described. Studies were designed to experimentally illustrate the role of neon metastable atoms in the population of selected excited-state ion levels of copper atoms sputtered from a brass cathode. Methane was employed as a quenching agent to reduce the neon metastable population, and ion emission signals from a variety of copper ion transitions showed a decrease in intensity corresponding to the introduction of methane to the plasma. In addition, with variations in discharge pressure, a correlation between the number of neon metastables and the strength of the ion emission signals was observed. These results provide evidence that Penning ionization is an important mechanism for the ionization of sputtered atoms in neon glow discharges, similar to the results obtained for an argon system. Finally, a brief comparison of the neon and argon systems was made which showed the neon discharge gas to be more efficient at populating the monitored copper ion levels. This is most likely due to the higher energy of the neon metastables, which permits the direct population of these ion levels from the copper ground state.

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2

Bouchikhi, A. "Study of the Neon Dielectric Barrier Discharge on a Capacitively Coupled Radio Frequency at a Low Pressure with Metastable Atom Density: Effect of the Pressure." Ukrainian Journal of Physics 67, no. 7 (November 26, 2022): 504. http://dx.doi.org/10.15407/ujpe67.7.504.

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We study the neon dielectric barrier discharge with metastable atom density on a capacitively coupled radio frequency at a pressure of about 4–12 Torr. The transport parameters of neon are dependent on the electron energy, and their range is about 0.04–50 eV. A one-dimensional fluid model and the drift-diffusion theory are used to describe the neon dielectric barrier discharge. The effect of the gas pressure on the properties of neon dielectric barrier discharge is presented for the cycle-averaged regime. It is shown that the particle densities, electric potential, and metastable atom density increase with the pressure. In addition, the surface charge concentration and the gap voltage increase as well.

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3

Wiederkehr, Alex W., Michael Motsch, Stephen D. Hogan, Markus Andrist, Hansjürg Schmutz, Bruno Lambillotte, Josef A. Agner, and Frédéric Merkt. "Multistage Zeeman deceleration of metastable neon." Journal of Chemical Physics 135, no. 21 (December 7, 2011): 214202. http://dx.doi.org/10.1063/1.3662141.

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4

Ballance, C. P., D. C. Griffin, J. A. Ludlow, and M. S. Pindzola. "Electron-impact ionization of metastable neon." Journal of Physics B: Atomic, Molecular and Optical Physics 37, no. 24 (December 7, 2004): 4779–87. http://dx.doi.org/10.1088/0953-4075/37/24/005.

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5

Shimizu, Fujio, Kazuko Shimizu, and Hiroshi Takuma. "A high intensity metastable neon trap." Chemical Physics 145, no. 2 (August 1990): 327–31. http://dx.doi.org/10.1016/0301-0104(90)89124-9.

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6

Gordon, Sean D. S., and Andreas Osterwalder. "Energy and orientation independence of the channel branching in Ne* + ND3 chemi-ionisation." Physical Chemistry Chemical Physics 21, no. 26 (2019): 14306–10. http://dx.doi.org/10.1039/c8cp06666c.

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7

Johnston, M., K. Fujii, J. Nickel, and S. Trajmar. "Ionization of metastable neon by electron impact." Journal of Physics B: Atomic, Molecular and Optical Physics 29, no. 3 (February 14, 1996): 531–43. http://dx.doi.org/10.1088/0953-4075/29/3/018.

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8

Bouchikhi, Abdelaziz. "Physical proprieties of DC glow discharges in a neon–argon gas mixture." Canadian Journal of Physics 96, no. 1 (January 2018): 62–70. http://dx.doi.org/10.1139/cjp-2017-0120.

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This paper reports a detailed study of 90% Ne – 10% Ar gas mixture DC glow discharge at low pressure, wherein 15 chemical reactions are considered. The second-order fluid model is used. The parameters of particle transport and their rate coefficients strictly depend on mean electron energy. In the framework of the local electric field approximation, we have developed an analytical expression of the drift velocity of positive argon ions in a neon gas [Formula: see text], which is in good agreement with the experimental results, and serves to give best results than the results obtained using [Formula: see text] that exist in the literature. The results show that the argon ion density is more important than the neon ion density despite the presence of more constant background neon gas density in the mixture. The current density reaches 0.1729 mA/cm2 for 250 V applied potential under 2 Torr pressure in a gas mixture. The spatio-temporal evolution of both electric and energetic characteristics, as well as their spatial distribution in the steady state, are shown and discussed. The maximum value of the neon metastable atom density is 4.54957 × 108 cm−3, and for argon metastable atom density is 5.4689 × 108 cm−3. The model is verified experimentally and theoretically in the particular case.

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9

Shimizu, Fujio, Kazuko Shimizu, and Hiroshi Takuma. "Double-slit interference with ultracold metastable neon atoms." Physical Review A 46, no. 1 (July 1, 1992): R17—R20. http://dx.doi.org/10.1103/physreva.46.r17.

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10

Ballance, C. P., J. A. Ludlow, M. S. Pindzola, and S. D. Loch. "Electron-impact ionization of ground and metastable neon." Journal of Physics B: Atomic, Molecular and Optical Physics 42, no. 17 (August 12, 2009): 175202. http://dx.doi.org/10.1088/0953-4075/42/17/175202.

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11

Glover, R. D., D. E. Laban, and R. T. Sang. "Light assisted collisions with cold metastable neon atoms." Journal of Physics: Conference Series 194, no. 9 (November 1, 2009): 092006. http://dx.doi.org/10.1088/1742-6596/194/9/092006.

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12

Engels, P., S. Salewski, H. Levsen, K. Sengstock, and W. Ertmer. "Atom lithography with a cold, metastable neon beam." Applied Physics B 69, no. 5-6 (December 1999): 407–12. http://dx.doi.org/10.1007/s003400050827.

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13

Иванов, В. А., and Ю. Э. Скобло. "Гелиевое послесвечение без метастабильных частиц." Журнал технической физики 127, no. 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 recombination of atomic ions and dissociative recombination leads to the conclusion in favor of the latter process as a source of the excited atoms.

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14

Light, Charles E., and Edward B. M. Steers. "Observations on metastable neon atoms in hollow-cathode discharges." Analyst 110, no. 5 (1985): 439. http://dx.doi.org/10.1039/an9851000439.

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15

Alili, Tahar, Abdelaziz Bouchikhi, and Mohamed Rizouga. "Investigations of argon and neon abnormal glow discharges in the presence of metastable atom density with fluid model." Canadian Journal of Physics 94, no. 8 (August 2016): 731–39. http://dx.doi.org/10.1139/cjp-2015-0692.

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In this manuscript an investigation of a DC argon and neon abnormal glow discharges with metastable atom density is presented. The values of pressure lie between 133.32 and 330 Pa, and the voltage ranges from 250 to 400 V in the case of argon gas. In the case of neon gas, the pressure has a value of 399.92 Pa (3 Torr) and the voltage ranges from 300 to 500 V. In this framework, an analysis of abnormal glow discharge characteristics is carried out in the case of input data taken from the Boltzmann equation in the multi-term approximation, and in the case of input data obtained from BOLISG+ code. With these differences of input data in the same gas, the output results are different; it appears in the cathodic region. The spatio-temporal distributions of electron and ion densities, the potential and electric field, the mean electron energy and the metastable atom density are shown. A 1D fluid model is used to solve self-consistently the first three moments of the Boltzmann’s equation coupled with the Poisson’s equation. The role of the presence of metastable atom density in the fluid model is clearly because of the domination of ionization processes by both stepwise and penning ionizations. Our results are validated with those obtained by both recent paper and experimental results.

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16

Ortiz, M., G. García, P. Martín, J. A. Cabrera, and J. Campos. "Quenching cross sections of neon metastable atoms by light molecules." Journal of Applied Physics 66, no. 9 (November 1989): 4010–12. http://dx.doi.org/10.1063/1.344009.

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17

Ben Arfa, M., B. Lescop, M. Cherid, B. Brunetti, P. Candori, D. Malfatti, S. Falcinelli, and F. Vecchiocattivi. "Ionization of ammonia molecules by collision with metastable neon atoms." Chemical Physics Letters 308, no. 1-2 (July 1999): 71–77. http://dx.doi.org/10.1016/s0009-2614(99)00569-2.

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18

Feron, S., J. Reinhardt, S. Le Boiteux, O. Gorceix, J. Baudon, M. Ducloy, J. Robert, et al. "Reflection of metastable neon atoms by a surface plasmon wave." Optics Communications 102, no. 1-2 (September 1993): 83–88. http://dx.doi.org/10.1016/0030-4018(93)90476-l.

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19

Kawanaka, J., M. Hagiuda, K. Shimizu, F. Shimizu, and H. Takuma. "Generation of an intense low-velocity metastable-neon atomic beam." Applied Physics B Photophysics and Laser Chemistry 56, no. 1 (January 1993): 21–24. http://dx.doi.org/10.1007/bf00332149.

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20

Brand, J. A., J. E. Furst, T. J. Gay, and L. D. Schearer. "Production of a high‐density state‐selected metastable neon beam." Review of Scientific Instruments 63, no. 1 (January 1992): 163–65. http://dx.doi.org/10.1063/1.1143000.

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21

Shimizu, Fujio, Kazuko Shimizu, and Hiroshi Takuma. "Laser Cooling of a Neon Atomic Beam in Metastable States." Japanese Journal of Applied Physics 26, Part 2, No. 11 (November 20, 1987): L1847—L1849. http://dx.doi.org/10.1143/jjap.26.l1847.

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22

Flack, Robert, Vincenzo Monachello, Basil Hiley, and Peter Barker. "A Method for Measuring the Weak Value of Spin for Metastable Atoms." Entropy 20, no. 8 (July 30, 2018): 566. http://dx.doi.org/10.3390/e20080566.

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A method for measuring the weak value of spin for atoms is proposed using a variant of the original Stern–Gerlach apparatus. A full simulation of an experiment for observing the real part of the weak value using the impulsive approximation has been carried out. Our predictions show a displacement of the beam of helium atoms in the metastable 23S1 state, Δw, that is within the resolution of conventional microchannel plate detectors indicating that this type of experiment is feasible. Our analysis also determines the experimental parameters that will give an accurate determination of the weak value of spin. Preliminary experimental results are shown for helium, neon and argon in the 23S1 and 3P2 metastable states, respectively.

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23

Baudon, J., F. Perales, Ch Miniatura, J. Robert, G. Vassilev, J. Reinhardt, and H. Haberland. "Polarization effects in metastable neon atom (Ne* (3P2)) on ground state neon atom collision at thermal energy." Chemical Physics 145, no. 2 (August 1990): 153–61. http://dx.doi.org/10.1016/0301-0104(90)89112-4.

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24

Pejovic, M. M., and G. Krstic. "Nonradiative lifetime of metastable states in helium and helium-neon mixtures." Journal of Physics D: Applied Physics 22, no. 1 (January 14, 1989): 235–37. http://dx.doi.org/10.1088/0022-3727/22/1/036.

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25

Corrégé, G., M. Ben Arfa, P. Descourt, C. Tannous, E. Kassab, and F. M. E. Tuffin. "Penning and associative ionization of argon atoms by excited metastable neon." Journal of Physics B: Atomic, Molecular and Optical Physics 34, no. 24 (December 19, 2001): 4997–5005. http://dx.doi.org/10.1088/0953-4075/34/24/303.

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26

Brunetti, Brunetto, Pietro Candori, David Cappelletti, Stefano Falcinelli, Fernando Pirani, Domenico Stranges, and Franco Vecchiocattivi. "Penning ionization electron spectroscopy of water molecules by metastable neon atoms." Chemical Physics Letters 539-540 (June 2012): 19–23. http://dx.doi.org/10.1016/j.cplett.2012.05.020.

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27

García, G., M. Ortiz, F. Blanco, J. A. Sánchez, and J. Campos. "Two-photon laser excitation of 2p5(2P1/2) 3d levels of neon." Canadian Journal of Physics 67, no. 10 (October 1, 1989): 977–79. http://dx.doi.org/10.1139/p89-170.

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A pulsed two-photon excitation of the 2p5(2P1/2) 3d levels of Ne (3d′ levels), from the metastable 3s(3/2)2 state, was made to measure their lifetimes. The experimental results of this work are 20.1 ± 0.3 and 19.6 ± 0.9 ns for the 3d′(3/2)2 and 3d′ (5/2)2 levels, respectively.

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28

Steinbrügge, René, Steffen Kühn, Fabrizio Nicastro, Ming Feng Gu, Moto Togawa, Moritz Hoesch, Jörn Seltmann, et al. "X-Ray Photoabsorption of Density-sensitive Metastable States in Ne vii, Fe xxii, and Fe xxiii." Astrophysical Journal 941, no. 2 (December 1, 2022): 188. http://dx.doi.org/10.3847/1538-4357/ac9c00.

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Abstract Metastable states of ions can be sufficiently populated in absorbing and emitting astrophysical media, enabling spectroscopic plasma-density diagnostics. Long-lived states appear in many isoelectronic sequences with an even number of electrons, and can be fed at large rates by various photonic and electronic mechanisms. Here, we experimentally investigate beryllium-like and carbon-like ions of neon and iron that have been predicted to exhibit detectable features in astrophysical soft X-ray absorption spectra. An ion population generated and excited by electron impact is subjected to highly monochromatic X-rays from a synchrotron beamline, allowing us to identify Kα transitions from metastable states. We compare their energies and natural line widths with state-of-the-art theory and benchmark level population calculations at electron densities of 1010.5 cm−3.

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29

Glover, R. D., J. E. Calvert, D. E. Laban, and R. T. Sang. "Optical control of collision dynamics in a metastable neon magneto-optical trap." Journal of Physics B: Atomic, Molecular and Optical Physics 44, no. 24 (November 30, 2011): 245202. http://dx.doi.org/10.1088/0953-4075/44/24/245202.

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30

Shimizu, Fujio. "Specular Reflection of Very Slow Metastable Neon Atoms from a Solid Surface." Physical Review Letters 86, no. 6 (February 5, 2001): 987–90. http://dx.doi.org/10.1103/physrevlett.86.987.

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31

Brunetti, Brunetto Giovanni, Pietro Candori, Stefano Falcinelli, Fernando Pirani, and Franco Vecchiocattivi. "The stereodynamics of the Penning ionization of water by metastable neon atoms." Journal of Chemical Physics 139, no. 16 (October 28, 2013): 164305. http://dx.doi.org/10.1063/1.4826101.

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32

Brunetti, B., P. Candori, S. Falcinelli, F. Vecchiocattivi, A. Sassara, and M. Chergui. "Dynamics of the Penning Ionization of Fullerene Molecules by Metastable Neon Atoms." Journal of Physical Chemistry A 104, no. 25 (June 2000): 5942–45. http://dx.doi.org/10.1021/jp994008a.

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33

Ashmore, J. P., and R. T. Sang. "Cathode design for a low-velocity metastable neon cold cathode discharge source." Measurement Science and Technology 12, no. 4 (March 19, 2001): N17—N21. http://dx.doi.org/10.1088/0957-0233/12/4/401.

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34

Echt, O., R. Parajuli, S. Matt, A. Stamatovic, P. Scheier, and T. D. Märk. "Kinetic energy release in exciton-driven metastable decay of neon cluster ions." Chemical Physics Letters 361, no. 1-2 (July 2002): 91–98. http://dx.doi.org/10.1016/s0009-2614(02)00929-6.

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35

Aquilanti, V., B. Brunetti, F. Vecchiocattivi, T. Letardi, H. Fang, and S. Fu. "Role of HCl ionization by metastable neon atoms in XeCl laser kinetics." Chemical Physics Letters 205, no. 2-3 (April 1993): 229–35. http://dx.doi.org/10.1016/0009-2614(93)89235-a.

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36

Shimizu, F., J. Fujita, and S. Mitake. "Real time interferometric manipulation of a neutral atomic beam by electric field." Canadian Journal of Physics 78, no. 5-6 (April 5, 2000): 529–35. http://dx.doi.org/10.1139/p00-063.

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Electric-field-controlled holography for atoms is demonstrated. Platinum electrodes are deposited among the array of parallel slits that are made on a silicon nitride film. A cold neon atomic beam in the 1s3[2p5(2Po1/2)3s : J = 0] metastable state is sent through the film and form a Fraunhofer diffraction pattern on a microchannel plate detector that is placed in the downstream of the film. By controlling the potential of each electrode an arbitrary one-dimensional diffraction pattern of atoms has been generated.PACS No. 78.90

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37

Popova, Maria M., Maksim D. Kiselev, Sergei M. Burkov, Elena V. Gryzlova, and Alexei N. Grum-Grzhimailo. "Spectroscopic Peculiarities at Ionization of Excited 2p5(2PJf)3s[K]0,1,2 States of Ne: Cooper Minima and Autoionizing Resonances." Atoms 10, no. 4 (September 26, 2022): 102. http://dx.doi.org/10.3390/atoms10040102.

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An extensive study of photoionization from neon excited states was performed. The R-matrix approach was applied to calculate a photoionization cross-section from the metastable 2p5(2PJf)3s[K]0,2 and dipole-allowed 2p5(2PJf)3s[K]1 states. The resonance structures and Cooper minimum accessible in photoionization from the excited states by the photons with energy below 30 eV were analyzed. The parameters of the lowest autoionizing states (AISs) of even parity were extracted by fitting of the photoionization cross-section. For the dipole-allowed states, calculations are presented for unpolarized, linearly and circularly polarized radiation.

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38

Ohayon, B., E. Wåhlin, and G. Ron. "Characterization of a metastable neon beam extracted from a commercial RF ion source." Journal of Instrumentation 10, no. 03 (March 10, 2015): P03009. http://dx.doi.org/10.1088/1748-0221/10/03/p03009.

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39

Teubner, P. J. O., J. L. Riley, M. C. Tonkin, J. E. Furst, and S. J. Buckman. "Total cross sections for the production of metastable neon atoms by electron impact." Journal of Physics B: Atomic and Molecular Physics 18, no. 17 (September 14, 1985): 3641–52. http://dx.doi.org/10.1088/0022-3700/18/17/023.

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40

Albertí, M., J. M. Lucas, B. Brunetti, F. Pirani, M. Stramaccia, M. Rosi, and F. Vecchiocattivi. "Anisotropy Effects in Methyl Chloride Ionization by Metastable Neon Atoms at Thermal Energies." Journal of Physical Chemistry A 104, no. 7 (February 2000): 1405–15. http://dx.doi.org/10.1021/jp993401d.

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41

Zhitnikov, R. A., and Yu A. Dmitriev. "Excitation energy transfer from the metastable excited He 23S1atom to the neon cryocrystal." Journal of Physics: Condensed Matter 6, no. 14 (April 4, 1994): 2727–38. http://dx.doi.org/10.1088/0953-8984/6/14/010.

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42

Falcinelli, Stefano, Pietro Candori, Marta Bettoni, Fernando Pirani, and Franco Vecchiocattivi. "Penning Ionization Electron Spectroscopy of Hydrogen Sulfide by Metastable Helium and Neon Atoms." Journal of Physical Chemistry A 118, no. 33 (May 9, 2014): 6501–6. http://dx.doi.org/10.1021/jp5030312.

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43

Aguilar, Antonio, Brunetto Brunetti, Miguel González, and Franco Vecchiocattivi. "A crossed beam study of the ionization of molecules by metastable neon atoms." Chemical Physics 145, no. 2 (August 1990): 211–18. http://dx.doi.org/10.1016/0301-0104(90)89116-8.

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44

Sofonea, V., and I. I. Popescu. "Theory of Optogalvanic Signals Originating from Metastable States in Hollow Cathode Neon Discharges." Contributions to Plasma Physics 30, no. 2 (1990): 215–22. http://dx.doi.org/10.1002/ctpp.2150300206.

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45

Markovic, Vidosav, Sasa Gocic, and Suzana Stamenkovic. "Homogeneous gas phase models of relaxation kinetics in neon afterglow." Facta universitatis - series: Physics, Chemistry and Technology 5, no. 1 (2007): 33–44. http://dx.doi.org/10.2298/fupct0701033m.

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The homogeneous gas phase models of relaxation kinetics (application of the gas phase effective coefficients to represent surface losses) are applied for the study of charged and neutral active particles decay in neon afterglow. The experimental data obtained by the breakdown time delay measurements as a function of the relaxation time td (?) (memory curve) is modeled in early, as well as in late afterglow. The number density decay of metastable states can explain neither the early, nor the late afterglow kinetics (memory effect), because their effective lifetimes are of the order of milliseconds and are determined by numerous collision quenching processes. The afterglow kinetics up to hundreds of milliseconds is dominated by the decay of molecular neon Ne2 + and nitrogen ions N2 + (present as impurities) and the approximate value of N2 + ambipolar diffusion coefficient is determined. After the charged particle decay, the secondary emitted electrons from the surface catalyzed excitation of nitrogen atoms on the cathode determine the breakdown time delay down to the cosmic rays and natural radioactivity level. Due to the neglecting of number density spatial profiles, the homogeneous gas phase models give only the approximate values of the corresponding coefficients, but reproduce correctly other characteristics of afterglow kinetics from simple fits to the experimental data.

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46

Giltner, David M., Roger W. McGowan, Siu Au Lee, and George A. Rinker. "Line shape of a Doppler-free two-photon transition in a metastable neon beam." Physical Review A 49, no. 4 (April 1, 1994): 2508–14. http://dx.doi.org/10.1103/physreva.49.2508.

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47

Rehse, S. J., A. D. Glueck, S. A. Lee, A. B. Goulakov, C. S. Menoni, D. C. Ralph, K. S. Johnson, and M. Prentiss. "Nanolithography with metastable neon atoms: Enhanced rate of contamination resist formation for nanostructure fabrication." Applied Physics Letters 71, no. 10 (September 8, 1997): 1427–29. http://dx.doi.org/10.1063/1.119914.

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48

Doery, M. R., E. J. D. Vredenbregt, S. S. Op de Beek, H. C. W. Beijerinck, and B. J. Verhaar. "Limit on suppression of ionization in metastable neon traps due to long-range anisotropy." Physical Review A 58, no. 5 (November 1, 1998): 3673–82. http://dx.doi.org/10.1103/physreva.58.3673.

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49

Christ, M., A. Scholz, M. Schiffer, R. Deutschmann, and W. Ertmer. "Diffraction and reflection of a slow metastable neon beam by an evanescent light grating." Optics Communications 107, no. 3-4 (April 1994): 211–17. http://dx.doi.org/10.1016/0030-4018(94)90023-x.

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50

Brunetti, B., P. Candori, J. De Andres, F. Pirani, M. Rosi, S. Falcinelli, and F. Vecchiocattivi. "Dissociative Ionization of Methyl Chloride and Methyl Bromide by Collision with Metastable Neon Atoms." Journal of Physical Chemistry A 101, no. 41 (October 1997): 7505–12. http://dx.doi.org/10.1021/jp970945b.

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