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FIZIKA A 13 (2004) 2 , 77-88
 
LINEAR AND NONLINEAR PROPAGATION OF ION-ACOUSTIC WAVE IN A BOUNDED
PLASMA CONTAINING NEGATIVE IONS
KALYAN KR. MONDALa, SUJAY KR. BHATTACHARYAb and
SAILENDRA N. PAULc
aDepartment of Physics, Raja Peary Mohan College, Dist.
Hooghly, West Bengal, India, Pin-712 258
bDepartment of Physics, Meghnad Saha Institute of Technology, Near NRI Complex,
Behind Ruby Hospital, Calcutta-7000150, India
cCentre for Science Education and Research, B/4, Shyamali Housing Estate, Salt
Lake City, Calcutta-700064
E-mail addresses: sujay2k2@rediffmail.com , sailenpaul@rediffmail.com
Received 11 August 2004; Accepted 18 October 2004
Online 7 February 2005
Linear and nonlinear propagation of ion-acoustic waves are theoretically investigated
in a multicomponent plasma consisting of electrons, positive ions and negative ions
bounded in a cylindrical waveguide. The stability of the ion-acoustic wave is discussed
taking into account the role of finite geometry and the concentration of negative ions of
the plasma. The effect of nonlinearity on the ion-acoustic wave is investigated through
the derivation of the effective potential (Sagdeev potential) and the results are
discussed graphically with the variation of ion-streaming and the geometry of the bounded
plasma.
PACS numbers: 52.35.Fp, 52.35.Sb
UDC 537.525
Keywords: negative-ion plasma, ion-acoustic solitary wave, finite geometry
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