激光柱形腔靶的X射线温度和X射线转换效率

X-RAY TEMPERATURE AND X-RAY CONVERSION EFFI-CIENCY FOR LASER CYLINDRICAL CAVITY TARGETS

本文根据实验和数值模拟给出的信息,解析研究激光加热柱形腔靶(简称“腔靶”)X射线温度与激光转换的X射线能之间的定标规律,推断了1989年在神光激光器上做的系列腔靶实验,对于每束激光能量为300—500J,脉冲宽度为0.7—1.0ns,波长λ为1.06μm的高斯型激光源,双束靶的X射线转换效率约为(50—55)%,X射线温度为(1.5—1.7)×10~6K。

In this paper, the scaling laws between the X-ray temperature and the X-ray energy converted by laser have been studied analytically for the laser cylindrical cavity targets according to the information of the experiments and the numerical simulations. For a series of experiments made on the Shenguang facility in 1989, we predict that, as the laser energy of each beam is 300-500J, the pulse width is 0.7-1.0ns, and the wavelength is 1.06 μm, the X-ray conversion efficiency is about 50-55% for the two beam targets, and the corresponding X-ray temperature is about 1.5×106-1.7×106K.