摘要:

Second harmonic spectra emitted from 1054 nm laser‐produced plasmas have been observed in side‐ and backscattering and are shown to have angularly dependent, complex structures. Sidescattered spectra show regularly spaced (∼20 A˚) Stokes components at intensities above 5×1013W/cm2. The Stokes components are polarized and stronger in the plane of the polarization of the incident laser. These Stokes components are interpreted to be caused by a combination of electron plasma waves generated by the parametric decay instability and the subsequent electron decay instability. Backscattered spectra show additional finely spaced red‐shifted satellites above 4×1014W/cm2, indicative of the electron decay instability of plasmons generated from resonance absorption.

ISSN:0031-9171    

DOI:10.1063/1.864845

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

It is shown that the ac helicity injection current drive described by Jensen and Chu and by Bevir and Gray can alternately be deduced from the pseudoelectric field ∼⟨U˜×B˜⟩/cproduced by oscillating velocity and magnetic field vectorsU˜ andB˜ (here ⟨ ⟩ denote time average).

ISSN:0031-9171    

DOI:10.1063/1.864846

出版商:AIP    

年代:1984

数据来源: AIP

摘要:

The fluid theory and oscillation center theory of the ponderomotive drift give apparently different results. It is shown that this difference is caused by a ponderomotive diamagnetic effect.

ISSN:0031-9171    

DOI:10.1063/1.864847

出版商:AIP    

年代:1984

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.864912

出版商:AIP    

年代:1984

数据来源: AIP