摘要:

The nonlinear equations governing the diffusion of magnetized plasmas do not admit steady‐state solutions when the magnetic field intensity exceeds a critical value. This may explain the onset of instabilities leading to anomalous diffusion.

ISSN:0031-9171    

DOI:10.1063/1.1691973

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The linear electric field for longitudinal plasma oscillations is given by a series which does not converge uniformly ast→ 0. The difference between the limit of the infinite sum and the sum of the limits of each term is evaluated.

ISSN:0031-9171    

DOI:10.1063/1.1691974

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

A constant of motion is derived for a charged particle in the magnetic and electric fields of a circularly polarized wave with time‐variable amplitude. The wave is assumed to propagate along a uniform external magnetic field.

ISSN:0031-9171    

DOI:10.1063/1.1691975

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The stability of a nonstationary plasma is studied. It is concluded that the single‐humped distribution is not necessarily stable. The result is applied to the case of the electron plasma wave.

ISSN:0031-9171    

DOI:10.1063/1.1691976

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

It is shown that the velocity discontinuity between a plasmavacuum interface is always unstable to small perturbations when the effect of gravity is taken into account.

ISSN:0031-9171    

DOI:10.1063/1.1691977

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

A weak shock wave in a weakly ionized gas is shown to produce ion density and electric‐field perturbations with shock “widths” approximately equal to(Te/Tn)l, wherelis the mean free path in the neutral gas and(Te/Tn)is the electron‐to‐neutral‐gas temperature ratio.

ISSN:0031-9171    

DOI:10.1063/1.1691978

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

A quantitative comparison is made between numerical solutions for the current to a free‐molecular electrostatic probe and a modified Langmuir analysis. The maximum difference is about 60% over a range ofrp/&lgr;Dfrom 1 to 10 000.

ISSN:0031-9171    

DOI:10.1063/1.1691979

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The beam disruption times observed in a plasma betatron experiment are compared with those predicted by the negative‐mass instability. Agreement with theory is found for a wide range of data.

ISSN:0031-9171    

DOI:10.1063/1.1691981

出版商:AIP    

年代:1968

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1691982

出版商:AIP    

年代:1968

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1691983

出版商:AIP    

年代:1968

数据来源: AIP