EFFECT OF A LARGE-AMPLITUDE LANGMUIR WAVE ON THE WEIBEL INSTABILITY

Authors
ANNOU R TRIPATHI VK
Citation
R. Annou et Vk. Tripathi, EFFECT OF A LARGE-AMPLITUDE LANGMUIR WAVE ON THE WEIBEL INSTABILITY, Physics letters. A, 226(3-4), 1997, pp. 193-195
Citations number
2
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
226
Issue
3-4
Year of publication
1997
Pages
193 - 195
Database
ISI
SICI code
0375-9601(1997)226:3-4<193:EOALLW>2.0.ZU;2-7
Abstract
The effect of a large amplitude Langmuir wave on the Weibel instabilit y in a plasma with an electron beam is studied. The electromagnetic pe rturbation couples to the Langmuir wave to give rise to two Langmuir s ideband waves, which in turn produce a current enhancing the electroma gnetic perturbation. The Langmuir wave enhances the growth over its li near value. The enhancement is larger at shorter wavelengths. For upsi lon(0)/c similar to 0.15, the growth rate is enhanced by a factor of 3 /2.