ANISOTROPIC SELF-DEFOCUSING OF A TRIVELPIECE-GOULD MODE IN A PLASMA

Authors
SHARMA AK KONAR S
Citation
Ak. Sharma et S. Konar, ANISOTROPIC SELF-DEFOCUSING OF A TRIVELPIECE-GOULD MODE IN A PLASMA, Journal of Plasma Physics, 52, 1994, pp. 189-193
Citations number
12
Categorie Soggetti
Phsycs, Fluid & Plasmas
Journal title
Journal of Plasma Physics → ACNP
ISSN journal
00223778
Volume
52
Year of publication
1994
Part
2
Pages
189 - 193
Database
ISI
SICI code
0022-3778(1994)52:<189:ASOATM>2.0.ZU;2-4
Abstract
The paper presents a paraxial-ray theory of self-defocusing of oblique ly propagating Trivelpiece-Gould (TG) modes in a homogeneous plasma. T he TG mode with Gaussian distribution of intensity, in a direction per pendicular to its phase velocity, creates a ponderomotive force on ele ctrons. The electrons are redistributed through ambipolar diffusion. T he redistributed electrons are responsible for defocusing of the TG mo de. The importance of our study is pointed out.