Fine structures in the
optical absorption spectra of
photochemical silver in silverhalides? A call for further researchby Mladen Georgiev A survey is presented of the work done so far to check earlier claims that a fine
structure may be observed to occur under certain circumstances in the impurity spectral range of the optical absorption spectra of silver
halides following photo stimulation in the intrinsic range. This structure, associated with the photochemical formation of silver specks, has been questioned over the years. Nevertheless, both earlier and recent findings seem to suggest the possibility that a silver fine structure may form and be observed, occasionally though due to the rapid competition of rival processes. We weigh carefully the
experimental evidence on silver halides against a background of similar data on alkali halides, where competing processes run slower. We come to the conclusion that present day advances in experimental techniques may be quite adequate for providing a solid experimental basis to solve the problem unambiguously.
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