基频光腔靶辐射温度定标  

Radiation Temperature Scaling for Cavity Targets with Fundamental Freguency

作　　者：孙可煦[1] 江少恩[1] 丁永坤[1] 黄天晅[1] 崔延莉[1] 汤晓青[1] 陈久森[1] 易荣清[1] 郑志坚[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心

出　　处：《光学学报》2004年第10期1324-1329,共6页Acta Optica Sinica

基　　金：国家 8 6 3计划 (86 3 4 16 3)资助课题

摘　　要：研究腔靶辐射温度和X光耦合效率与靶结构及激光辐照条件的依赖关系。利用神光 Ⅱ基频光 (波长1.0 5 3μm ,能量 3～ 5kJ/8束 ,脉宽 0 .6～ 0 .9ns)辐照金腔靶。采用软X光能谱仪及平响应探测器分别测量腔靶诊断口辐射X光功率谱及其能量角分布。同时 ,利用五针孔时、空分辨成像技术对腔靶诊断口发射软X光进行实验观测 ,给出辐射温度推算中需要的等效诊断口面积修正因子。在北京同步辐射软X光标定站 ,对上述诊断用软X光探测元器件进行了全谱范围 (0 .0 5～ 1.5keV)的绝对标定 ,以提高X光辐射功率和黑腔辐射温度的诊断精度。The dependence of radiation temperatures and coupling efficiencies of cavity targets on the target structures and laser irradiation conditions are investigated.Shenguang Ⅱ fundamertal-frequency laser with wavelength 1.053 μm, energy 3～5 kJ/8 beams, pulse width 0.6～0.9 ns is employed to irradiate gold cavity targets. The broadband soft X-ray spectrometer and flat response detector are used to measure the soft X-ray spectrum and its angular distribution from the diagnostic hole on cavity target. At the same time, technology of temporal and spatial resolution image with 5 pinholes is used to observe the X-rays emitted from the diagnostic hole on the cavity target, and then the correction factor of effective area of the diagnostic hole is obtained. Meanwhile, above-mentioned soft X-ray detection elements are calibrated by BSRF-3W1B beam in the region of 50～1500 eV to improve the irradiation power and diagnostic temperation.

关 键 词：原子光谱学 基频激光 黑腔靶 软X光能谱 堵口效应 辐射温度 

分 类 号：O562.3[理学—原子与分子物理]