【摘要】 采用组合型诊断技术获取Ｘ光辐射时间、空间、能谱相互关联的３维信息，得到了Ｘ光焦斑随时间和随入射激光能量的变化关系，并观测到膨胀等离子体、探测器阈值、测量能区以及测试方位对Ｘ光焦斑测量带来的影响更多还原

【Abstract】 The principle and method of measuring X ray focus spot are presented. Combination type diagnostic technique is used to obtain the three dimensional information about X ray radiation spot varying with time, space and energy spectra. The relations of radiation spots with time and incident laser energy are obtained. The effects of expanding plasma, detection threshold, measurement energy region as well as the measurement position on the X ray focus spot measurement are observed.更多还原