HIGHER-ORDER CONTRIBUTION TO THE ION-ACOUSTIC SOLITON IN A DRIFT NEGATIVE-ION PLASMA

SALIENDRA N. PAUL^a,b, SHANKAR CHATTOPADHYAY^a and KAMAL K. GHOSH^a

^aSerampore Girls' College, P.O. Serampore, District -Hooghly West Bengal, India, Pin - 7 12201
^bM. N. Saha Centenary School of Plasma Physics and Astrophysics, Serampore Girls' College Campus, 13 T. C. Goswami Street,
P. O. - Serampore, District - Hooghly, West Bengal, India

Received 17 March 1997

The effects of higher-order nonlinearity and dispersiveness on the ion-acoustic solitons in a multicomponent plasma, having warm electrons, positive ions and negative ions have been investigated using the pseudopotential method. It is observed that drifting negative ions considerably modify the potentials as well as widths of the solitary wave.

UDC 510.182,  531.133
PACS numbers 52.35.Mw, 52.35.Sb

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