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Collective effects in bremsstrahlung in plasmas

Published online by Cambridge University Press:  13 March 2009

V. N. Tsytovich ,
R. Bingham ,
U. de Angelis  and
A. Forlani
V. N. Tsytovich
Affiliation:
Rutherford Appleton Laboratory, Chilton, Dideot, Oxfordshire OX11 0QX, U.K.
R. Bingham
Affiliation:
Rutherford Appleton Laboratory, Chilton, Dideot, Oxfordshire OX11 0QX, U.K.
U. de Angelis
Affiliation:
Department of Physical Sciences, University of Napoli, Italy
A. Forlani
Affiliation:
Department of Physical Sciences, University of Napoli, Italy
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Abstract

The results of recent developments in the theory of fluctuations in plasmas show that the previously used theory of bremsstrahlung is incomplete and the exact expressions for bremsstrahlung should include transition bremsstrahlung. The collective effects in bremsstrahlung known previously as Debye screening are changed to a qualitatively different structure, which removes the effect of ion polarization in bremsstrahlung and introduces a new effective polarization which depends on an effective ion charge and electron velocity. The results may be relevant for applications in plasmas when the wavelength is greater than the Debye length. It is shown that for the problem of photon transport in the solar interior the correct collective corrections to the bremsstrahlung change the opacity by only about −0·35%, which is less than was calculated previously when collective effects in bremsstrahlung where estimated without taking recent results of plasma fluctuation theory into account.

Type
Research Article
Information
Journal of Plasma Physics , Volume 56 , Issue 1 , August 1996 , pp. 127 - 147
Copyright
Copyright © Cambridge University Press 1996

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References

Akoplan, A. & Tsytovich, V. N. 1976 Soviet Phys. JETP 44, 87.Google Scholar
Bahcal, J. 1989 Neutrino Astrophysics. Cambridge University Press.Google Scholar
Bekefi, A. 1966 Radiation Processes in Plasmas. Wiley, New York.Google Scholar
Evans, D. E. & Katzenstein, J. 1969 Rep. Prog. Phys. 32, 207.Google Scholar
Ginzburg, V. L. & Tsytovich, V. N. 1990 Transition Scattering and Transition Bremsstrahlung Adam Hilger, Bristol.Google Scholar
Ichimaru, S. 1973 Basic Principles of Plasma Physics: A Statistical Approach Benjamin, Reading.Google Scholar
Iglesias, C. & Rogers, F. 1991 Astrophys J. 371, 408.Google Scholar
Sitenko, A. G. 1979 Fluctuation and Nonlinear Plasma Responses. Pergamon Press, Oxford.Google Scholar
Tsytovich, V. N. 1973 Proc. P.N. Lebedev Phys. Inst., Vol. 66.Google Scholar
Tsytovich, V. N. 1995 a Usp. Fiz. Nauk 165, 89.Google Scholar
Tsytovich, V. N. 1995 b Lecture on Nonlinear Plasma Kinetics. Springer-Verlag, Berlin.Google Scholar
Tsytovich, V. N. & Oiringel, O. 1994 (eds) Polarization Bremsstrahlung. Plenum Press, New York.Google Scholar
Tsytovich, V. N. Bingham, R., de Angelis, U. Forlani, A. & Occorsio, M. 1996 a Plasma effects in the solar core and the solar neutrino problem. Astroparticle Phys. (to be published).CrossRefGoogle Scholar
Tsytovich, V. N. Bingham, R., de Angelis, U. & Forlani A. 1996 b The equation of radiative transfer in the solar interior. Physica Scripta (to be published).Google Scholar