Interaction of microwave radiation undergoing stochastic phase jumps with plasmas or gases

V. I. Karas, Ya. B. Fainberg, A. F. Alisov, A. M. Artamoshin, R. Bingham, I. V. Gavrilenko, V. D. Levchenko, M. Lontano, V. I. Mirny, I. F. Potapenko, A. N. Starostin

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

New types of beam-plasma devices generating intense stochastic microwave radiation in the interaction of electron beams with hybrid plasma waveguides were developed and put into operation at the National Science Center Kharkov Institute of Physics and Technology (Ukraine). The objective of the paper is to discuss the results of theoretical and experimental studies and numerical simulations of the normal and oblique incidence of linearly polarized electromagnetic waves on an interface between a vacuum and an overcritical plasma. The main results of the reported investigations are as follows: (i) for the parameter values under analysis, the transmission coefficient for microwaves with a stochastically jumping phase is one order of magnitude greater than that for a broadband regular electromagnetic wave with the same spectral density; (ii) the electrons are heated most efficiently by obliquely incident waves with a stochastically jumping phase and, in addition, the electron distribution function has a high-energy tail; and (iii) necessary conditions for gas breakdown and for the initiation of a microwave discharge in stochastic fields in a light source are determined. The anomalously large transmission coefficient for microwaves, the anomalous character of the breakdown conditions, the anomalous behavior of microwave gas discharges, and the anomalous nature of collisionless electron heating, are attributed to stochastic jumps in the phase of microwave radiation.
LanguageEnglish
Pages748-760
Number of pages13
JournalPlasma Physics Reports
Volume31
Issue number9
DOIs
Publication statusPublished - Sep 2005

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microwaves
gases
interactions
electromagnetic radiation
breakdown
Ukraine
gas discharges
coefficients
electron distribution
light sources
electrons
incidence
distribution functions
electron beams
broadband
waveguides
vacuum
physics
heating
simulation

Keywords

  • microwave radiation
  • plasma
  • electromagnetic waves
  • microwave gas discharge

Cite this

Karas, V. I., Fainberg, Y. B., Alisov, A. F., Artamoshin, A. M., Bingham, R., Gavrilenko, I. V., ... Starostin, A. N. (2005). Interaction of microwave radiation undergoing stochastic phase jumps with plasmas or gases. Plasma Physics Reports, 31(9), 748-760. https://doi.org/10.1134/1.2048833
Karas, V. I. ; Fainberg, Ya. B. ; Alisov, A. F. ; Artamoshin, A. M. ; Bingham, R. ; Gavrilenko, I. V. ; Levchenko, V. D. ; Lontano, M. ; Mirny, V. I. ; Potapenko, I. F. ; Starostin, A. N. / Interaction of microwave radiation undergoing stochastic phase jumps with plasmas or gases. In: Plasma Physics Reports. 2005 ; Vol. 31, No. 9. pp. 748-760.
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abstract = "New types of beam-plasma devices generating intense stochastic microwave radiation in the interaction of electron beams with hybrid plasma waveguides were developed and put into operation at the National Science Center Kharkov Institute of Physics and Technology (Ukraine). The objective of the paper is to discuss the results of theoretical and experimental studies and numerical simulations of the normal and oblique incidence of linearly polarized electromagnetic waves on an interface between a vacuum and an overcritical plasma. The main results of the reported investigations are as follows: (i) for the parameter values under analysis, the transmission coefficient for microwaves with a stochastically jumping phase is one order of magnitude greater than that for a broadband regular electromagnetic wave with the same spectral density; (ii) the electrons are heated most efficiently by obliquely incident waves with a stochastically jumping phase and, in addition, the electron distribution function has a high-energy tail; and (iii) necessary conditions for gas breakdown and for the initiation of a microwave discharge in stochastic fields in a light source are determined. The anomalously large transmission coefficient for microwaves, the anomalous character of the breakdown conditions, the anomalous behavior of microwave gas discharges, and the anomalous nature of collisionless electron heating, are attributed to stochastic jumps in the phase of microwave radiation.",
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author = "Karas, {V. I.} and Fainberg, {Ya. B.} and Alisov, {A. F.} and Artamoshin, {A. M.} and R. Bingham and Gavrilenko, {I. V.} and Levchenko, {V. D.} and M. Lontano and Mirny, {V. I.} and Potapenko, {I. F.} and Starostin, {A. N.}",
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Karas, VI, Fainberg, YB, Alisov, AF, Artamoshin, AM, Bingham, R, Gavrilenko, IV, Levchenko, VD, Lontano, M, Mirny, VI, Potapenko, IF & Starostin, AN 2005, 'Interaction of microwave radiation undergoing stochastic phase jumps with plasmas or gases' Plasma Physics Reports, vol. 31, no. 9, pp. 748-760. https://doi.org/10.1134/1.2048833

Interaction of microwave radiation undergoing stochastic phase jumps with plasmas or gases. / Karas, V. I.; Fainberg, Ya. B.; Alisov, A. F.; Artamoshin, A. M.; Bingham, R.; Gavrilenko, I. V.; Levchenko, V. D.; Lontano, M.; Mirny, V. I.; Potapenko, I. F.; Starostin, A. N.

In: Plasma Physics Reports, Vol. 31, No. 9, 09.2005, p. 748-760.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Interaction of microwave radiation undergoing stochastic phase jumps with plasmas or gases

AU - Karas, V. I.

AU - Fainberg, Ya. B.

AU - Alisov, A. F.

AU - Artamoshin, A. M.

AU - Bingham, R.

AU - Gavrilenko, I. V.

AU - Levchenko, V. D.

AU - Lontano, M.

AU - Mirny, V. I.

AU - Potapenko, I. F.

AU - Starostin, A. N.

PY - 2005/9

Y1 - 2005/9

N2 - New types of beam-plasma devices generating intense stochastic microwave radiation in the interaction of electron beams with hybrid plasma waveguides were developed and put into operation at the National Science Center Kharkov Institute of Physics and Technology (Ukraine). The objective of the paper is to discuss the results of theoretical and experimental studies and numerical simulations of the normal and oblique incidence of linearly polarized electromagnetic waves on an interface between a vacuum and an overcritical plasma. The main results of the reported investigations are as follows: (i) for the parameter values under analysis, the transmission coefficient for microwaves with a stochastically jumping phase is one order of magnitude greater than that for a broadband regular electromagnetic wave with the same spectral density; (ii) the electrons are heated most efficiently by obliquely incident waves with a stochastically jumping phase and, in addition, the electron distribution function has a high-energy tail; and (iii) necessary conditions for gas breakdown and for the initiation of a microwave discharge in stochastic fields in a light source are determined. The anomalously large transmission coefficient for microwaves, the anomalous character of the breakdown conditions, the anomalous behavior of microwave gas discharges, and the anomalous nature of collisionless electron heating, are attributed to stochastic jumps in the phase of microwave radiation.

AB - New types of beam-plasma devices generating intense stochastic microwave radiation in the interaction of electron beams with hybrid plasma waveguides were developed and put into operation at the National Science Center Kharkov Institute of Physics and Technology (Ukraine). The objective of the paper is to discuss the results of theoretical and experimental studies and numerical simulations of the normal and oblique incidence of linearly polarized electromagnetic waves on an interface between a vacuum and an overcritical plasma. The main results of the reported investigations are as follows: (i) for the parameter values under analysis, the transmission coefficient for microwaves with a stochastically jumping phase is one order of magnitude greater than that for a broadband regular electromagnetic wave with the same spectral density; (ii) the electrons are heated most efficiently by obliquely incident waves with a stochastically jumping phase and, in addition, the electron distribution function has a high-energy tail; and (iii) necessary conditions for gas breakdown and for the initiation of a microwave discharge in stochastic fields in a light source are determined. The anomalously large transmission coefficient for microwaves, the anomalous character of the breakdown conditions, the anomalous behavior of microwave gas discharges, and the anomalous nature of collisionless electron heating, are attributed to stochastic jumps in the phase of microwave radiation.

KW - microwave radiation

KW - plasma

KW - electromagnetic waves

KW - microwave gas discharge

U2 - 10.1134/1.2048833

DO - 10.1134/1.2048833

M3 - Article

VL - 31

SP - 748

EP - 760

JO - Plasma Physics Reports

T2 - Plasma Physics Reports

JF - Plasma Physics Reports

SN - 1063-780X

IS - 9

ER -