利用X射线激光进行激光等离子体射流的诊断  

Experimental diagnosis of plasma jets by using an X-ray laser

作　　者：王琛[1] 方智恒[1] 孙今人[1] 王伟[1] 熊俊[1] 叶君建[1] 傅思祖[1] 顾援[1] 王世绩[1] 郑无敌[2] 叶文华[2] 乔秀梅[2] 张国平[2] 

机构地区：[1]上海激光等离子体研究所,上海201800 [2]北京应用物理与计算数学研究所,北京100088

出　　处：《物理学报》2008年第12期7770-7775,共6页Acta Physica Sinica

基　　金：国家高技术研究发展计划(批准号:2006AA804701,2006AA804702)资助的课题~~

摘　　要：射流是激光惯性约束聚变(ICF)、天体物理学等领域中一种普遍存在的非线性现象.在实验室对射流现象进行模拟、诊断等方面的研究对于理解ICF、天体物理中的相关现象具有重要参考价值.采用纳秒激光辐照特殊形状的圆孔靶产生等离子体射流,利用波长为13.9nm的X射线激光作为光源对特定时刻的射流进行阴影成像,获得了清晰的射流阴影图像,与理论模拟结果定性一致.The supersonic jets and the interaction of strong shock waves are ubiquitous features of the nonlinear hydrodynamics of inertial-confinement fusion, astrophysics, and related fields of high energy-density science, so very important value have their studies in laboratory. A laboratories experimental study on jets is reported. The plasma jets were created by an ns laser pulse irradiating a special circular hole target, and the shadow of jets were recorded by using an X-ray laser probe with wavelength of 13.9 nm. Legible shadow images of plasma jets were obtained. The experimental results and theoretical simulation were in qualitative agreement.

关 键 词：射流 X射线激光 等离子体诊断 

分 类 号：O536[理学—等离子体物理]