Polarized Debye Sheath in Degenerate Plasmas  

作　　者：M.Shahmansouri A.P.Misra 

机构地区：[1]Department of Physics,Faculty of Science,Arak University,Arak,P.O.Box 38156-8-8349,Iran [2]Department of Mathematics,Siksha Bhavana,Visva-Bharati(A Central University),Santiniketan-731235,India

出　　处：《Communications in Theoretical Physics》2019年第11期1341-1345,共5页理论物理通讯（英文版）

基　　金：Support from SERB,Govt.of India for a Research Project with sanction order No.CRG/2018/004475

摘　　要：The force on a charged dust grain in a plasma due to polarization of thermal ions and degenerate electrons around the grain is derived in the limits of weakly relativistic and ultra-relativistic degeneracy of electrons. It is found that in both these cases, the magnitude of the polarization force is enhanced compared to that in classical plasmas. The influence of this force on dust-acoustic(DA) modes is examined and discussed. It is shown that the DA wave frequency in degenerate plasmas is significantly reduced compared to the classical DA mode.The force on a charged dust grain in a plasma due to polarization of thermal ions and degenerate electrons around the grain is derived in the limits of weakly relativistic and ultra-relativistic degeneracy of electrons. It is found that in both these cases, the magnitude of the polarization force is enhanced compared to that in classical plasmas. The influence of this force on dust-acoustic(DA) modes is examined and discussed. It is shown that the DA wave frequency in degenerate plasmas is significantly reduced compared to the classical DA mode.

关 键 词：DEGENERATE plasma polarization force DUST acoustic WAVES 

分 类 号：O17[理学—数学]