Effect of the radial plasma nonuniformity on the propagation of guided m=+1 and m=−1 modes in helicon discharges

2016 ◽  
Vol 23 (10) ◽  
pp. 103505 ◽  
Author(s):  
Yu. M. Aliev ◽  
M. Krämer
Keyword(s):  
Helicon Discharges ◽  
Plasma Nonuniformity

Cathode Plasma Nonuniformity Effect Upon Reb Formation

1985 ◽  
Vol EI-20 (4) ◽  
pp. 801-805 ◽  
Author(s):  
A. S. Chernenko ◽  
V. D. Korolev ◽  
V. P. Smirnov ◽  
M. V. Tulupov ◽  
V. Y. Tsarfin
Keyword(s):  
Cathode Plasma ◽  
Plasma Nonuniformity

Wave propagation and noncollisional heating in neutral loop and helicon discharges

2011 ◽  
Vol 18 (2) ◽  
pp. 022107 ◽  
Author(s):  
Y. Celik ◽  
D. L. Crintea ◽  
D. Luggenhölscher ◽  
U. Czarnetzki ◽  
T. Ishijima ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Helicon Discharges

Analysis of the Plasma Properties Affected by Magnetic Confinement with Special Emphasis on Helicon Discharges

2014 ◽  
Vol 16 (12) ◽  
pp. 1111-1118 ◽  
Author(s):  
Yuguo Cheng ◽  
Mousen Cheng ◽  
Moge Wang ◽  
Xiong Yang ◽  
Xiaokang Li
Keyword(s):  
Magnetic Confinement ◽  
Plasma Properties ◽  
Helicon Discharges

Interaction of a relativistic electron beam with an inhomogeneous plasma

1968 ◽  
Vol 2 (4) ◽  
pp. 557-580 ◽  
Author(s):  
G. Dorman
Keyword(s):  
Growth Rate ◽  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Inhomogeneous Plasma ◽  
Plasma Temperature ◽  
Transverse Mode ◽  
Longitudinal Modes ◽  
Frequency Interaction ◽  
Plasma Nonuniformity

The investigation of the high-frequency interaction of a relativistic electron beam and a plasma is extended to include arbitrary variation of the plasma density. Analysing the coupled linearized Vlasov—Maxwell equations by means of a low-temperature expansion of the orbit integrals, a general equation for the electric field accurate to first order in the plasma temperature, beam temperature, and betatron frequency is obtained. This equation is applied to the investigations of transverse and longitudinal modes. A new transverse mode with |ω − kV0| ∼ ωβ is found to be collisionally unstable. The electrostatic instability is found to be slowed down by both low plasma temperature and low beam temperature, but the betatron oscillations increase the growth rate. A new longitidinal mode with |ω − kV0| ∼ ωβ, is found to be unstable for nonzero beam temperatures. The lowest order correction to the electrostatic growth rate due to a small plasma nonuniformity is obtained. The sign of this correction is found to depend critically on the shape of the inhomogeneity.

Sign in / Sign up

Export Citation Format

Share Document