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三乾燥性γ射线照相检疵法由於上期第二节中所介绍的照相法所得出的底片需要在各种溶液中进行顯影、停液、及冲洗,所以我们可以称之为湿性照相法。最近又出现一种簇新的照相检疵法,它同样适用於X光检疵及γ检疵。为了和以上一节所述的方法区别起见,特称之为乾燥性射线照相法。乾燥性射线照相法的基本原理见[图十],利用电晕放电的方法将硒很均匀地‘镀’在铜箔2上,敷了薄硒层的铜箔放在一个特制的盒子里,在铜
Three dry gamma ray inspection methods Since the negative film obtained by the photographic method described in the second section of the previous paragraph needs to be developed, stopped, and rinsed in various solutions, we can call it wet photographic method. Recently, a new camera inspection method has emerged. It also applies to X-ray inspection and gamma inspection. In order to distinguish it from the method described in the previous section, it is referred to as dry radiography. The basic principle of the desiccant radiography method is shown in [Figure 10]. Selenium is uniformly plated on the copper foil 2 by a corona discharge method, and a thin selenium-deposited copper foil is placed in a special box. In copper