Volume 78, Number 3, May 2007
|Number of page(s)||4|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||05 April 2007|
Landau damping effects on the low-energy bremsstrahlung process in a quantum plasma
Department of Electronics Engineering, Catholic University of Daegu, Hayang, Gyongsan, Gyungbuk 712-702, South Korea
2 Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791, South Korea
Accepted: 13 March 2007
The Landau damping effects on the low-energy bremsstrahlung process are investigated for both the soft- and hard-photon radiations in a quantum plasma composed of electrons and holes. The impact parameter method is applied to the motion of the projectile in order to investigate the variation of the bremsstrahlung cross-section as a function of the effective Debye length, impact parameter, and radiation photon energy. The results show that the Landau damping effects significantly enhance the bremsstrahlung radiation cross-section. It is important to note that the domain of the Landau damping effects is extended with increasing the radiation photon energy.
PACS: 52.20.-j – Elementary processes in plasmas
© Europhysics Letters Association, 2007
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