Original scientific paper
On the problem of self-focussing and transversal stability in a magnetised plasma with streaming ions
K. Kr. Mondal
; Department of Physics, Raja Peary Mohan College, Pin-712 258, Hooghly, West Bengal, India
A. Roychowdhury
; Department of Physics, Jadavpur University, Calcutta-700 032, West Bengal, India
S. N. Paul
; Serampore Girls' College, Pin-712 201, Hooghly, West Bengal, India
Abstract
Self-focusing in a magnetized plasma consisting of cold electrons and ions has been studied in a situation when ions have a streaming velocity and the external magnetic field is at an angle µ with the streaming direction. By the use of a modified scaling, we have deduced an analogue of a non-linear Schrodinger equation involving only the space variables, which actually controls the transversal stability of the system, thus signaling the possibility of self-focusing. The various situations arising due to the variation of the propagation angle µ and the streaming velocity u0 are discussed in detail for the specific cases of D2 and N2 ions.
Keywords
magnetised plasma; cold electrons and ions; streaming velocity and external magnetic field at an angle; non-linear Schrodinger equation; self-focusing; D2 and N2 ions
Hrčak ID:
301098
URI
Publication date:
1.5.2001.
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