Chinese Optics Letters, 2011, 9 (s1): s10309, Published Online: Jul. 7, 2011
Improvement methods of reflective photocathode QE of X-ray frame camera
310.6870 Thin films, other properties 040.7480 X-rays, soft x-rays, extreme ultraviolet (EUV) 040.5160 Photodetectors 020.4180 Multiphoton processes
Abstract
Time-resolved diagnosis of the transient process using X-ray frame cameras (XRCs) is an important means in inertial confinement fusion (ICF) experiments. The sensitivity of the photocathode is a key parameter of the entire camera system. This letter aims to raise the quantum efficiency (QE) of the photocathode. With the changes in the deposition parameters, such as deposit angle, thickness of the coating in the channel, and vacuum of evaporation, the QE results are different. After testing and theoretical calculation, we find that there is a best matching value among these parameters. When the coating parameter meet this best value, the gain of the XRC can be improved significantly.
Xiaohong Bai, Yonglin Bai, Zhurong Cao, Junping Zhao, Baiyu Liu, Junjun Qin, Bo Wang, Wenzheng Yang, Yongsheng Gou, Xianouyang. Improvement methods of reflective photocathode QE of X-ray frame camera[J]. Chinese Optics Letters, 2011, 9(s1): s10309.