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目前我们对照相过程机理的考虑,基本上仍然受1938年提出的Mott和Gurney理论的支配。这个理论所以能取得成功和经久不衰是由于在当时,把潜影的形成作为一种固态反应来考虑的思想是具有创见性的。 在固体物理的概念最为流行的年代里,Mott和Gurney着重指出了光激电子和它们完全靠静电吸引力被流动的填隙银离子中和所起的作用。他们全然忽视了光激空穴的作用,认为在卤化银晶体的内部,空穴是不能流动的。在他们的原始论文中,Mott和Gurney承认,“如果空穴可以流动”而且可以与填隙银离子竞争电子而发生中和反应的话,那么整个假设的模型就将“崩溃”。为此,根据Mott和Gurney的设想,专门设计了许多实验来
At present, our consideration of the photographic process mechanism is basically still governed by the Mott and Gurney theories proposed in 1938. The success and perpetuation of this theory is due to the fact that at the time, the idea of taking latent image formation as a solid-state reaction was innovative. In the most popular era of solid-state physics, Mott and Gurney highlighted the role of photo-induced electrons and the neutralization of the flowing interstitial silver ions by their electrostatic attraction. They completely ignored the role of the photoacid hole, thinking that the holes are not flowable inside the silver halide crystal. In their original essay, Mott and Gurney conceded that the whole hypothetical model would “crash” if a neutralization reaction occurred if holes could flow and could compete with interstitial silver ions for electrons. For this reason, many experiments have been specially designed based on the ideas of Mott and Gurney