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Title: Distinctive features of photoionized plasma from short x-ray-pulse interaction with gaseous medium

Abstract

The study of a photoionized plasma created through the interaction of a short linearly polarized x-ray pulse with a gaseous medium is presented in the context of the future design of experiments involving femtosecond free-electron laser pulses. The dispersion properties and instabilities of such x-ray-produced plasma are studied. It is shown that a two-stream type of instability can be obtained with a growth rate comparable to the plasma frequency. This is expected to have a dramatic effect on the evolution of an x-ray laser-produced plasma. A model for describing electromagnetic-field generation and emission resulting from the interaction of a short x-ray laser pulse with a gas jet is proposed. Issues addressed include the effect of the thermal electromotive force at the edge of a plasma driven by the anisotropic electron energy distribution that arises from the photoionization of a gas. Terahertz pulse emission from these photoionized plasma is also predicted.

Authors:
; ; ; ;  [1];  [2];  [2]
  1. Theoretical Physics Institute, University of Alberta, Edmonton T6G 2J1, Alberta (Canada) and P. N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow 119991 (Russian Federation)
  2. (Canada)
Publication Date:
OSTI Identifier:
20782464
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 1; Other Information: DOI: 10.1063/1.2150429; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANISOTROPY; BOUNDARY LAYERS; CHARGED-PARTICLE TRANSPORT; ELECTROMAGNETIC FIELDS; ELECTROMOTIVE FORCE; ELECTRONS; EMISSION; ENERGY SPECTRA; FREE ELECTRON LASERS; LANGMUIR FREQUENCY; PHOTOIONIZATION; PLASMA; PLASMA DIAGNOSTICS; PLASMA INSTABILITY; PLASMA JETS; PLASMA PRODUCTION; PULSES; X RADIATION; X-RAY LASERS

Citation Formats

Bychenkov, V.Yu., Romanov, D.V., Rozmus, W., Capjack, C.E., Fedosejevs, R., Theoretical Physics Institute, University of Alberta, Edmonton, Alberta T6G 2JI, and Department of Electrical and Computer Engineering, University of Alberta, Edmonton Alberta T6G 2J1. Distinctive features of photoionized plasma from short x-ray-pulse interaction with gaseous medium. United States: N. p., 2006. Web. doi:10.1063/1.2150429.
Bychenkov, V.Yu., Romanov, D.V., Rozmus, W., Capjack, C.E., Fedosejevs, R., Theoretical Physics Institute, University of Alberta, Edmonton, Alberta T6G 2JI, & Department of Electrical and Computer Engineering, University of Alberta, Edmonton Alberta T6G 2J1. Distinctive features of photoionized plasma from short x-ray-pulse interaction with gaseous medium. United States. doi:10.1063/1.2150429.
Bychenkov, V.Yu., Romanov, D.V., Rozmus, W., Capjack, C.E., Fedosejevs, R., Theoretical Physics Institute, University of Alberta, Edmonton, Alberta T6G 2JI, and Department of Electrical and Computer Engineering, University of Alberta, Edmonton Alberta T6G 2J1. 2006. "Distinctive features of photoionized plasma from short x-ray-pulse interaction with gaseous medium". United States. doi:10.1063/1.2150429.
@article{osti_20782464,
title = {Distinctive features of photoionized plasma from short x-ray-pulse interaction with gaseous medium},
author = {Bychenkov, V.Yu. and Romanov, D.V. and Rozmus, W. and Capjack, C.E. and Fedosejevs, R. and Theoretical Physics Institute, University of Alberta, Edmonton, Alberta T6G 2JI and Department of Electrical and Computer Engineering, University of Alberta, Edmonton Alberta T6G 2J1},
abstractNote = {The study of a photoionized plasma created through the interaction of a short linearly polarized x-ray pulse with a gaseous medium is presented in the context of the future design of experiments involving femtosecond free-electron laser pulses. The dispersion properties and instabilities of such x-ray-produced plasma are studied. It is shown that a two-stream type of instability can be obtained with a growth rate comparable to the plasma frequency. This is expected to have a dramatic effect on the evolution of an x-ray laser-produced plasma. A model for describing electromagnetic-field generation and emission resulting from the interaction of a short x-ray laser pulse with a gas jet is proposed. Issues addressed include the effect of the thermal electromotive force at the edge of a plasma driven by the anisotropic electron energy distribution that arises from the photoionization of a gas. Terahertz pulse emission from these photoionized plasma is also predicted.},
doi = {10.1063/1.2150429},
journal = {Physics of Plasmas},
number = 1,
volume = 13,
place = {United States},
year = 2006,
month = 1
}
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