X射线分幅相机电脉冲时标方法研究

在神光II装置上,利用选通脉冲与激光脉冲在示波器上的时间关联建立了一套X射线分幅相机的时间定标方法.以激光打靶的第一分幅像为定标点,由对应的电脉冲关系得到定时的基准.采用四路260 J、1 ns、0.35 μm的激光打击镀金球靶的分幅照相,确定了X射线发射在MCP微带线上的基准点,时标准确度为50 ps.在惯性约束聚变背光照相实验中,该时标系统得到成功应用.

Electrical Pulses Timing of X-ray Framing Cameras

A timing system of X ray framing cameras was set up based shenguang II ,in which the gating pulses and laser pulse were linked by a high bandwidth oscilloscope and their delay time corresponded with all X-ray frames from laser-plasma.The benchmark of X-ray emission from a gilded ball hitted by two 260J,1ns,0.35μm lasers was experimentally defined on MCP microstripline,and the timing precision of framing image was of 50 ps.The system was successfully applied to backlight experiments of capsule implosion symmetries in inertial confinement fusion.