Rosenberg M J, Thorn D B, Izumi N, Williams D, Rowland M, Torres G, Haugh M, Hillyard P, Adelman N, Schuler T, Barrios M A, Holder J P, Schneider M B, Fournier K B, Bradley D K, Regan S P
Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Rev Sci Instrum. 2019 Jan;90(1):013506. doi: 10.1063/1.5053592.
The sensitivity of Fuji SR and MS image plates (IPs) used in x-ray spectrometers on OMEGA and the National Ignition Facility has been measured using two techniques. A set of radioisotopes has been used to constrain image-plate sensitivity between 6 and 60 keV, while a Manson source has been used to expose image plates to x rays at energies between 1.5 and 8 keV. These data have shown variation in sensitivity on the order of 5% for a given IP type and scanner settings. The radioisotope technique has also been used to assess IP fading properties for MS-type plates over long times. IP sensitivity as a function of scanner settings and pixel size has been systematically examined, showing variations of up to a factor of 2 depending on the IP type. Cross-calibration of IP scanners at different facilities is necessary to produce a consistent absolute sensitivity curve spanning the energy range of 2-60 keV.
已使用两种技术测量了在欧米伽（OMEGA）和国家点火装置上的X射线光谱仪中使用的富士SR和MS成像板（IP）的灵敏度。使用一组放射性同位素来限制成像板在6至60 keV之间的灵敏度，同时使用曼森源使成像板暴露于能量在1.5至8 keV之间的X射线下。这些数据表明，对于给定的IP类型和扫描仪设置，灵敏度变化约为5%。放射性同位素技术还用于评估MS型板在长时间内的IP褪色特性。已系统地研究了IP灵敏度作为扫描仪设置和像素大小的函数，结果表明，根据IP类型，变化幅度高达2倍。必须对不同设施的IP扫描仪进行交叉校准，以生成涵盖2至60 keV能量范围的一致的绝对灵敏度曲线。
