摘要
A relatively self-consistent theory of dust-acoustic waves in the strongly coupled dusty plasmas containing variable-charge impurities is given.Relevant physical processes such as dust elastic relaxation and dust charge relaxation are taken into account.It is shown that the negative dispersion of dust-acoustic waves due to the strong correlation of dusts is enhanced in the presence of dust-neutral collisions.
作者
谢柏松
贺凯芬
M.Y.Yu
XIE Bai-Song;HE Kai-Fen;M.Y.Yu(Key Laboratory in University for Beam Technology and Materials Modification,Beijing Normal University,Beijing 100875;Institute of Low Energy Nuclear Physics,Beijing Normal University,Beijing 100875(mailing address);Beijing Radiation Center,Beijing 100875;Institut fur Theoretische Physik I,Ruhr-Universitat Bochum,0-44780 Bochum,Germany)
基金
Supported by the National Natural Science Foundation of China under Grant Nos.19905001 and 19975006
partially by the Research Fund for the Doctoral Program of Higher Education of China
the Sonderforschungsbereich 191 Niedertemperatur Plasmen(Germany)。
