Nonlinear dust-ion-acoustic waves in a multi-ion plasma with trapped electrons

Pramana ◽  
2011 ◽  
Vol 77 (2) ◽  
pp. 357-368 ◽  
Author(s):  
S S DUHA ◽  
B SHIKHA ◽  
A A MAMUN
1997 ◽  
Vol 50 (2) ◽  
pp. 309 ◽  
Author(s):  
Y. N. Nejoh

The nonlinear wave structures of large amplitude ion-acoustic waves are studied in a plasma with positrons. We have presented the region of existence of the ion-acoustic waves by analysing the structure of the pseudopotential. The region of existence sensitively depends on the positron to electron density ratio, the ion to electron mass ratio and the positron to electron temperature ratio. It is shown that the maximum Mach number increases as the positron temperature increases and the region of existence of the ion-acoustic waves spreads as the positron temperature increases. The present theory is applicable to analyse large amplitude ion-acoustic waves associated with positrons which may occur in space plasmas.


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