抄録
The lifetime of the photolytic silver atom in photographic emulsions was measured by the multiflash exposure method which is a kind of intermittent exposure method. The lifetime at 20°C and the apparent activation energy were 2±0.2 s and 0.82±0.05 eV, respectively in a room air environment. In dry air and vacuum environment, however, the lifetime increased to 11±1 sec and 320±30s while the apparent activation energy decreased to 0.47±0.04eV and 0.44±0.04eV, respectively. These results show that the lifetime of the photolytic silver atom is determined by complicated chemical processes rather than a simple primary process such as the thermal ionization of the silver atom.
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