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Turbulence Effects on Bremsstrahlung Emission in the Turbulent Solar Plasma

Title
Turbulence Effects on Bremsstrahlung Emission in the Turbulent Solar Plasma
Author
정영대
Keywords
atomic processes; plasmas; Sun: atmosphere
Issue Date
2012-02
Publisher
OXFORD UNIV PRESS, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
Citation
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN; FEB 25 2012, 64 1, 5p.
Abstract
Turbulence effects on bremsstrahlung emission due to the electron ion interaction were investigated in the turbulent solar plasma. The effective interaction potential, taking into account the correction factor to the nonlinear dielectric function due to plasma turbulence, and the impact-parameter method were employed in order to obtain the bremsstrahlung radiation cross section in a turbulent plasma as a function of the impact parameter, diffusion coefficient, radiation photon energy, projectile energy, and plasma parameters. It has been shown that the turbulence effects considerably enhance the bremsstrahlung radiation cross section. In addition, it was found that the turbulence effects of the solar atmosphere on the bremsstrahlung cross section increase with increasing radiation photon energy, but decrease with increasing thermal energy. It can be expected that the Landau damping effect on the bremsstrahlung spectrum from the solar corona is less important than that from the solar chromospheres due to temperature jumps. However, the effect of the plasma turbulence on the bremsstrahlung spectrum from the solar chromosphere would be smaller than that from the solar corona.
URI
https://academic.oup.com/pasj/article/64/1/19/1432394
ISSN
0004-6264
DOI
10.1093/pasj/64.1.19
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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