Plasma heating with a rotating relativistic electron beam. I. Return current processes
作者:
Kim Molvig,
Norman Rostoker,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1977)
卷期:
Volume 20,
issue 3
页码: 494-503
ISSN:0031-9171
年代: 1977
DOI:10.1063/1.861888
出版商: AIP
数据来源: AIP
摘要:
An advantageous configuration for plasma heating with a relativistic beam utilizes an annular beam rotating about a guide magnetic field. The return current processes for such a configuration are considered. For the parameters expected to prevail in an experiment, the plasma response can be described as magnetic diffusion or critically damped magnetosonic waves, these being equivalent. Equations for the axial and angular return currents are derived and take the form of decoupled diffusion equations. The effects of pulse shape, boundary conditions, etc. are then treated. The drag force on the beam resulting from the interaction is greatly enhanced and leads to a stopping length reduction by the factor (1/2)(v∥/c)3as compared with nonrotating beams. The implications of these effects for a plasma heating application are discussed.
点击下载:
PDF
(733KB)
返 回