Abstract

The formation of a stable sublatent image as a result of the action of pairs of light quanta has been investigated theoretically on the basis of transitions from a ground stage through an unstable level to a higher level. Expressions for the fraction of grains in the sublatent image stage for continuous as well as for intermittent exposures have been derived, the latter for the purpose of determining the critical time period. The possibility that the absorption of more light quanta is necessary for the formation of a developable image has been taken into account. A model including low and high intensity reciprocity failure is outlined briefly.

© 1956 Optical Society of America

Estimation of the Critical τ Period in Latent-Image Formation by Intermittent Exposures*

R. E. Maerker
J. Opt. Soc. Am. 44(8) 625-629 (1954)

Low Intensity Reciprocity-Law Failure in Photographic Exposure II. Multiplet-Quantum Hits in a Critical Time Period*†

J. H. Webb
J. Opt. Soc. Am. 40(4) 197-202 (1950)

Low Intensity Reciprocity-Law Failure in Photographic Exposure: Energy Depth of Electron Traps in Latent-Image Formation; Number of Quanta Required to Form the Stable Sublatent Image*†

J. H. Webb
J. Opt. Soc. Am. 40(1) 3-13 (1950)

Reciprocity Law for X-Rays.* Part II: Failure in the Reversal Region

Margarete Ehrlich
J. Opt. Soc. Am. 46(10) 801-804 (1956)

An Incremental Photometer and Optical Measurements in the Photographic Latent-Image Range*

N. R. Nail, F. Moser, and F. Urbach
J. Opt. Soc. Am. 46(3) 218-222 (1956)