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Dynamics of charge density fluctuations in two-component hydrogen plasma

Published online by Cambridge University Press:  13 March 2009

F. Yoshida
F. Yoshida
Affiliation:
Institute of Theoretical Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
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Extract

A systematic study is made of the dynamical properties of the charge density fluctuations in strongly coupled two-component plasmas. The time-correlation function of the partial density fluctuations is described with the use of the memory function formalism. A second-order memory function is approximately expressed in terms of its self-part by taking into account the total momentum conservation law. After assuming a Gaussian time-dependence for the self-part, the excitation spectrum of the charge density fluctuation is calculated for the semi-classical hydrogen plasma, and is in fairly good agreement with the molecular dynamics calculation due to Hansen & McDonald. It is found that the collisional effects play an important role in the strongly coupled system.

Type
Articles
Information
Journal of Plasma Physics , Volume 27 , Issue 1 , February 1982 , pp. 55 - 68
Copyright
Copyright © Cambridge University Press 1982

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References

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