摘要:

The Krylov‐Bogoliubov‐Mitropolsky perturbation method is applied to systems of nonlinear dispersive waves including plasma waves such as ion‐acoustic, magneto‐acoustic, and electron plasma waves. It is found that long time slow modulation of the complex wave amplitude can be described by the nonlinear Schro¨dinger equation for a very wide class of nonlinear dispersive waves.

ISSN:0031-9171    

DOI:10.1063/1.1694942

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

The energetic ion distribution resulting from the injection of high‐energy neutrals into a toroidal plasma has been derived. An appropriate kinetic equation which contains the angular scattering, friction, and diffusion of the energetic ions by the background particles, charge exchange on the background neutrals, and acceleration of the ions by the electric field has been solved analytically by use of the WKBJ method. Collisions of the energetic ions with the faster moving electrons results in some of the ions increasing their energy above the injection energy. The width of this ``high‐energy tail'' is shown to depend upon the electron temperature and the electric field. An estimate of the effect upon the width of this tail of collisions between the energetic ions themselves is also given. Finally, illustrated examples of the various significant physical processes are presented.

ISSN:0031-9171    

DOI:10.1063/1.1694943

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

Synchronous quenching of drift‐wave instability is investigated experimentally. The measurements show resonance phenomena similar to that of ion‐sound instability. The result is quantitatively compared with a phenomenological theory which includes a linear growth and a nonlinear saturation source term.

ISSN:0031-9171    

DOI:10.1063/1.1694944

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

It is shown that the threshold for absolute backscatter linear instability is the same as the threshold for nonlinear steady state reflection in a plasma slab.

ISSN:0031-9171    

DOI:10.1063/1.1694945

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

For frequencies below the ion cyclotron frequency, it is shown that, the potential of an oscillating point charge in a magnetized plasma contains a new resonance cone which is due to the electrostatic ion wave.

ISSN:0031-9171    

DOI:10.1063/1.1694946

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

For the beam‐plasma instability with &ohgr; > &ohgr;cein the limit of a cold, weak beam effective energy transfer to the plasma is observed. This is found to agree with the one‐dimensional beam trapping calculation when linear cyclotron damping is included.

ISSN:0031-9171    

DOI:10.1063/1.1694947

出版商:AIP    

年代:1974

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1694948

出版商:AIP    

年代:1974

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1694949

出版商:AIP    

年代:1974

数据来源: AIP