Characteristics of dynamic shielding on the bremsstrahlung radiation in electron-ion scattering in astrophysical thermal turbulent plasmas

Title
Characteristics of dynamic shielding on the bremsstrahlung radiation in electron-ion scattering in astrophysical thermal turbulent plasmas
Author
정영대
Keywords
atomic data; atomic processes
Issue Date
2014-01
Publisher
The Royal Astronomical Society
Citation
Monthly Notices of the Royal Astronomical Society, Volume 437, Issue 1, Pages 790?797
Abstract
We investigate the electron?ion bremsstrahlung process in astrophysical thermal turbulent plasmas including the influence of the dynamic plasma shielding. The effective interaction potential taking into account the dynamic shielding length and the influence of the plasma turbulence through the diffusion effect with the impact parameter analysis is employed in order to obtain the bremsstrahlung radiation cross-section in turbulent plasmas as a function of the Debye length, diffusion coefficient, impact parameter, projectile energy, photon energy and thermal energy. The results show that the bremsstrahlung radiation cross-section decreases with an increase of the thermal energy for small impact parameters and, however, increases with increasing diffusion coefficient. In addition, the dynamic shielding effect enhances the bremsstrahlung radiation cross-section for small thermal energies. It is also found that the dynamic shielding effect on the bremsstrahlung radiation cross-section increases with an increase of the diffusion coefficient and, however, decreases with increasing thermal energy in astrophysical turbulent plasmas.
URI
https://academic.oup.com/mnras/article/437/1/790/1008899http://hdl.handle.net/20.500.11754/47233
ISSN
1365-2966; 0035-8711
DOI
10.1093/mnras/stt1952
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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