Dynamic stabilization of plasma instability  

作　　者：S.Kawata T.Karino Y.J.Gu 

机构地区：[1]Graduate School of Engineering, Utsunomiya University [2]Institute of Physics of the ASCR, ELI-Beamlines [3]Institute of Plasma Physics of the CAS

出　　处：《High Power Laser Science and Engineering》2019年第1期17-26,共10页高功率激光科学与工程（英文版）

基　　金：supported by MEXT;JSPS Kakenhi15K05359;ILE/Osaka University;CORE/Utsunomiya University;Japan–U.S.Fusion Research Collaboration Program conducted by MEXT,Japan;supported by the project ELITAS(CZ.02.1.01/0.0/0.0/16 013/0001793);the project High Field Initiative(CZ.02.1.01/0.0/0.0/15 003/0000449)both from European Regional Development Fund;funding from the European Union’s Horizon2020 research and innovation programme under grant agreement No.633053(EURO fusion project CfP-AWP17-IFE-CEA-01);the IT4Innovations Centre of Excellence under projects CZ.1.05/1.1.00/02.0070 and LM2011033;ECLIPSE cluster of ELI-Beamlines;UK EPSRC funded projects EP/G054940/1

摘　　要：The paper presents a review of dynamic stabilization mechanisms for plasma instabilities. One of the dynamic stabilization mechanisms for plasma instability was proposed in the paper [Kawata, Phys. Plasmas 19, 024503(2012)],based on a perturbation phase control. In general, instabilities emerge from the perturbations. Normally the perturbation phase is unknown, and so the instability growth rate is discussed. However, if the perturbation phase is known, the instability growth can be controlled by a superimposition of perturbations imposed actively. Based on this mechanism we present the application results of the dynamic stabilization mechanism to the Rayleigh–Taylor instability(RTI) and to the filamentation instability as typical examples in this paper. On the other hand, in the paper [Boris, Comments Plasma Phys. Control. Fusion 3, 1(1977)] another mechanism was proposed to stabilize RTI, and was realized by the pulse train or the laser intensity modulation in laser inertial fusion [Betti et al., Phys. Rev. Lett. 71, 3131(1993)]. In this latter mechanism, an oscillating strong force is applied to modify the basic equation, and consequently the new stabilization window is created. Originally the latter was proposed by Kapitza. We review the two stabilization mechanisms, and present the application results of the former dynamic stabilization mechanism.The paper presents a review of dynamic stabilization mechanisms for plasma instabilities. One of the dynamic stabilization mechanisms for plasma instability was proposed in the paper [Kawata, Phys. Plasmas 19, 024503(2012)],based on a perturbation phase control. In general, instabilities emerge from the perturbations. Normally the perturbation phase is unknown, and so the instability growth rate is discussed. However, if the perturbation phase is known, the instability growth can be controlled by a superimposition of perturbations imposed actively. Based on this mechanism we present the application results of the dynamic stabilization mechanism to the Rayleigh–Taylor instability(RTI) and to the filamentation instability as typical examples in this paper. On the other hand, in the paper [Boris, Comments Plasma Phys. Control. Fusion 3, 1(1977)] another mechanism was proposed to stabilize RTI, and was realized by the pulse train or the laser intensity modulation in laser inertial fusion [Betti et al., Phys. Rev. Lett. 71, 3131(1993)]. In this latter mechanism, an oscillating strong force is applied to modify the basic equation, and consequently the new stabilization window is created. Originally the latter was proposed by Kapitza. We review the two stabilization mechanisms, and present the application results of the former dynamic stabilization mechanism.

关 键 词：DYNAMIC INSTABILITY STABILIZATION FILAMENTATION INSTABILITY PLASMA INSTABILITY RAYLEIGH-TAYLOR INSTABILITY STABILIZATION of INSTABILITY 

分 类 号：O4[理学—物理]