负载等离子体扰动对Z箍缩动态黑腔辐射温度的影响  

Effect of load plasma disturbance on radiation temperaturein Z-pinch dynamic hohlraum

作　　者：刘晓丽 祁建敏[1] 褚衍运[1] Liu Xiaoli;Qi Jianmin;Chu Yanyun(Institute of Nuclear Physics and Chemistry,CAEP,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2023年第5期29-37,共9页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(11875239,12135010,12175207)。

摘　　要：通过二维辐射流体力学模拟研究了Z箍缩动态黑腔负载等离子体撞击泡沫柱的动力学过程,探索了带扰动负载等离子体形状对黑腔内辐射温度的影响。结果表明,带有扰动的负载等离子体撞击泡沫后会产生Rayleigh-Taylor(RT)流体不稳定性,导致动态黑腔内的辐射在负载等离子体光薄区域发生漏失,使黑腔内辐射温度降低;负载等离子体扰动振幅越大、波长越大,辐射漏失越严重,同等动能加载条件下黑腔内辐射温度也越低。The dynamic process of load plasma impacting on the foam cylinder was studied by two-dimensionalradiation hydrodynamics simulation,and the influence of the shape of load plasma with disturbance on the radiationtemperature in dynamic hohlraum was explored.The results show that Rayleigh-Taylor fluid instability will begenerated after the disturbed load plasma impacting on the foam,and the development of RT instability will lead to theradiation leakage in the light-thin region of the load plasma,which will reduce the radiation temperature in thedynamic hohlraum.The larger the amplitude and the wavelength of disturbance in the load plasma,the more seriousradiation leakage occurs,and the lower the radiation temperature will be in the dynamic hohlraum under the samekinetic energy loading condition.

关 键 词：Z箍缩 动态黑腔 等离子体扰动 辐射漏失 RAYLEIGH-TAYLOR不稳定性 

分 类 号：TL62[核科学技术—核技术及应用]