The report on performance of image intensifier affected by gas on surface

In order to illustrate the performance of intensifier affected by gas on surface, the kovar ring surface has been tested by XPS. According the result, gas type and quantity are calculated. With the theory of thermal and electron stimulated gas desorption, the remaining gas on surface after thermal and electron treatment is reckoned and the surface outgassing rate is evaluated on the assumption that the image intensifier is working in the 10 -3 lx environment. Then, the performance of image intensifier is evaluated by the effect of gas on the surface at last.