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Oct 13 – 18, 2014
Hotel Park Inn Pribaltiyskaya
Europe/Moscow timezone

Stabilization Effect of Weibel Modes in Relativistic Laser Fusion Plasma

Oct 16, 2014, 2:00 PM
4h 45m
Green 8-9 (Hotel Park Inn Pribaltiyskaya)

Green 8-9

Hotel Park Inn Pribaltiyskaya

Saint Petersburg, Russian Federation
Poster Poster 6

Speaker

Prof. Abdelaziz Sid (PRIMALAB laboratory, University of Batna)

Description

In this work, the Weibel instability due to inverse bremsstrahlung (IB) absorption in laser fusion plasma has been investigated. The stabilization effect due to the coupling of the self-generated magnetic field by Weibel instability with the laser wave field is explicitly showed. In this study, the relativistic effects are taken into account where 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 instability or even stabilization of these modes. It has been shown that the previous analysis of the Weibel instability due to IB have overestimated the values of the generated magnetic fields. Therefore, the generation of magnetic fields by the Weibel instability due to IB should not affect the experiences of inertial confinement fusion.
Country or International Organisation Algeria
Paper Number IFE/P6-8

Primary author

Prof. Abdelaziz Sid (PRIMALAB laboratory, University of Batna)

Co-authors

Dr Abdenasser Ghezal (COMENA, Alger) Dr Slimen Belghit (PRIMALAB laboratory, University of Batna)

Presentation materials

There are no materials yet.