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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260J、1ns、0.35μm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50ps.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.
A time calibration method of X-ray frame camera was established by using the time correlation of strobe pulse and laser pulse on the oscilloscope in SG-II device.The first sub-image of laser shooting was used as calibration point, The relationship between the corresponding electrical impulses was obtained on a timed basis.The four-way 260J, 1ns, 0.35μm laser attack on the gold-plated ball target was taken and the fiducials of the X-ray emission on the MCP microstrip line were determined. The accuracy of the time scale was 50ps. In inertial confinement fusion backlit photography experiments, the time-scale system has been successfully applied.