Potential distributions around a moving test charge in quantum plasmas

被引:76
作者
Ali, S. [1 ]
Shukla, P. K.
机构
[1] Ruhr Univ Bochum, Inst Theoret Phys 4, Fak Phys & Astron, D-44780 Bochum, Germany
[2] Ruhr Univ Bochum, Ctr Plasma Sci & Astrophys, Fak Phys & Astron, D-44780 Bochum, Germany
[3] Govt Coll Univ, Dept Phys, Lahore 54000, Pakistan
[4] Umea Univ, Dept Phys, SE-90187 Umea, Sweden
[5] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany
[6] Inst Super Tecn, GoLP, P-1049001 Lisbon, Portugal
[7] Rutherford Appleton Lab, CCLRC, Ctr Fundamental Phys, Didcot OX11 0QX, Oxon, England
[8] Univ Strathclyde, SUPA, Dept Phys, Glasgow G 40NG, Lanark, Scotland
关键词
D O I
10.1063/1.2352974
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
By using the dielectric response function of quantum electron plasmas, potential distributions around a moving test charge are calculated. The near-field potential follows the modified Debye-Huckel potential, while the far-field potential turns out to be oscillatory. Both the Debye-Huckel and wake potentials strongly depend on the Fermi energy and the electron quantum correlation strength. The relevance of the present investigation to semiconductor plasmas is discussed. (c) 2006 American Institute of Physics.
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页数:6
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