Nonlinear interaction of a rippled laser beam with an electrostatic upper hybrid wave in collisional plasma

被引：23

作者：

Gill, T. S. ^{[1
]}

Saini, N. S. ^{[1
]}

机构：

[1] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India

来源：

LASER AND PARTICLE BEAMS | 2007年 / 25卷 / 02期

关键词：

collisional plasma; Raman scattering; rippled laser beam; upper hybrid wave;

D O I：

10.1017/S0263034607000134

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, authors have studied the growing interaction of the rippled laser beam with upper hybrid mode leading to enhanced Raman scattering for collisional plasma. The presence of ripple leads to additional coupling between the rippled laser beam and electrostatic upper hybrid mode via modified background density. Computational results show the focusing of the upper hybrid wave for the chosen set of plasma parameters. With coupling being strong, the excited upper hybrid wave further interacts with rippled laser beam and give rise to enhanced Raman scattering. The significant role of collisional parameter S is also highlighted in the present investigation. An expression for the scattered power is derived and the effect of the externally applied static magnetic field on enhancement of scattered power is observed. We conclude from present analysis that the effect of the increased magnetic field is useful in suppressing the growth of the ripple.

引用

页码：283 / 293

页数：11

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