TITLE

Growth of a ring ripple on a Gaussian beam in a plasma

AUTHOR(S)
Sodha, M. S.; Sharma, Ashutosh; Prakash, Gyan; Verma, M. P.
PUB. DATE
June 2004
SOURCE
Physics of Plasmas;Jun2004, Vol. 11 Issue 6, p3023
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The growth of a ring ripple, riding on an intense Gaussian laser beam, through plasma has been studied. The amplitude ratio p of the ripple and the beam and the dimensionless width ρ1 of the ripple are chosen as significant coordinates. It is observed that the positive quadrant of the p, ρ1 space can be divided in three distinct regions corresponding to steady divergence, oscillatory divergence and oscillatory convergence of the ripple. The variation of ripple width with distance of propagation has been obtained for typical points in the three regions. Collisions, ponderomotive force, and relativistic dependence of mass on quiver velocity have been considered as the mechanisms, which introduce nonlinearity. © 2004 American Institute of Physics.
ACCESSION #
13154929

 

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