Department of Physics, University of Essex, Colchester, Essex, United Kingdom.
J Xray Sci Technol. 1989 Jan 1;1(2):162-70. doi: 10.3233/XST-1989-1205.
A crystal spectrometer with a photodiode array (PDA) detector was tested for a range of x-ray energies between 1 and 2 keV. A laser-produced plasma has been used as an x-ray source and was generated by the high-power (Vulcan) glass laser system at the SERC Rutherford Appleton Laboratory, UK. The performance of the array was directly compared with the response of Kodak DEF x-ray film. In order to compare quantitatively the performances of the PDA and the film, detective quantum efficiency (DQE) considerations are presented for both devices. It is demonstrated that the PDA has a useful dynamic range which is approximately seven times greater than that of film, a peak DQE of approximately six times that of film, and a greatly superior low-signal performance. The operational characteristics of the PDA are discussed.
一台带有光电二极管阵列（PDA）探测器的晶体分光计在 1 到 2 keV 的一系列 X 射线能量下进行了测试。激光产生的等离子体被用作 X 射线源，由英国 SERC 卢瑟福·阿普尔顿实验室的高功率（Vulcan）玻璃激光系统产生。该阵列的性能与柯达 DEF X 射线胶片的响应进行了直接比较。为了定量比较 PDA 和胶片的性能，对这两种设备的探测量子效率（DQE）进行了考虑。结果表明，PDA 具有大约比胶片大七倍的有用动态范围，大约是胶片的 DQE 的六倍，并且具有优异的低信号性能。讨论了 PDA 的工作特性。
