Stabilization effect ofWeibel modes due to inverse bremsstrahlung absorption in laser fusion plasma using Krook collisions model

Pramana

S BELGHIT¹  A SID¹ 

[1] Laboratoire de Physique des Rayonnements et de Leurs Interactions Avec la Matière (PRIMALAB), Departement de Physique, Faculté des Sciences de la Matière, Université de Batna 1, 05000DZ, Batna, Algéria$$

关键词: Thermonuclear fusion;    inverse bremsstrahlung;    Weibel instability;    stabilization;    Krook collision.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

In this work, the Weibel instability due to inverse bremsstrahlung 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. The main result obtained in this work is that the inclusion of self-generated magnetic field due to Weibel instability to the inverse bremsstrahlung absorption causes a stabilizing effect of excited Weibel modes. We found a decrease in the spectral range of Weibel unstable modes.This decrease 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 analyses of the Weibel instability due to inverse bremsstrahlunghave overestimated the values of the generated magnetic fields. Therefore, the generation of magnetic fields by the Weibel instability due to inverse bremsstrahlung should not affect the experiences of an inertial confinement fusion.

【 授权许可】

Unknown