Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1864719 | Physics Letters A | 2008 | 4 Pages |
Abstract
Linear and nonlinear ion acoustic waves are studied in unmagnetized electron–ion quantum plasmas. Sagdeev potential approach is employed to describe the nonlinear quantum ion acoustic waves. It is found that density dips structures are formed in the subsonic region in a electron–ion quantum plasma case. The amplitude of the nonlinear structures remains constant and the width is broadened with the increase in the quantization of the system. However, the nonlinear wave amplitude is reduced with the increase in the wave Mach number. The numerical results are also presented.
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Physical Sciences and Engineering
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Physics and Astronomy (General)
Authors
S. Mahmood, A. Mushtaq,