Light pressure of time‐dependent fields in plasmas
作者:
A. Zeidler,
H. Schnabl,
P. Mulser,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1985)
卷期:
Volume 28,
issue 1
页码: 372-376
ISSN:0031-9171
年代: 1985
DOI:10.1063/1.865158
出版商: AIP
数据来源: AIP
摘要:
An expression of the light pressure &Pgr; is derived for the case of a nearly monochromatic electromagnetic wave with arbitrarily time‐dependent amplitude. Thereby &Pgr; is defined as the time‐averaged force density exerted on a plasma by the wave. The resulting equations are valid for both transverse and longitudinal waves. The light pressure turns out to consist of two components: the well‐known gradient‐type term and a new nonstationary solenoidal term. This is true for warm as well as cold plasmas. The importance of the new term for the generation of static magnetic fields is shown, and a model in which shear forces may result is given. Formulas for the nonstationary light pressure developed previously are discussed.
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