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Author Belghit, Slimen ♦ Sid, Abdelaziz
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ ABSORPTION ♦ BREMSSTRAHLUNG ♦ FOKKER-PLANCK EQUATION ♦ INERTIAL CONFINEMENT ♦ LASERS ♦ MAGNETIC FIELDS ♦ PLASMA ♦ PLASMA INSTABILITY ♦ RELATIVISTIC RANGE ♦ STABILIZATION
Abstract In this work, the Weibel instability (WI) due to inverse bremsstrahlung (IB) absorption in a laser fusion plasma has been investigated. The stabilization effect due to the coupling of the self-generated magnetic field by WI with the laser wave field is explicitly shown. In this study, the relativistic effects are taken into account. Here, the basic equation is the relativistic Fokker-Planck (F-P) equation. The main obtained result is that the coupling of self-generated magnetic field with the laser wave causes a stabilizing effect of excited Weibel modes. We found a decrease in the spectral range of Weibel unstable modes. This decreasing is accompanied by a reduction of two orders in the growth rate of instable Weibel modes or even stabilization of these modes. It has been shown that the previous analysis of the Weibel instability due to IB has overestimated the values of the generated magnetic fields. Therefore, the generation of magnetic fields by the WI due to IB should not affect the experiences of an inertial confinement fusion.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-06-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 6


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