Accession Number : AD0673756

Title :   COMPARING THE DISPERSITY OF A LATENT IMAGE FORMED BY THE ACTION OF LIGHT AND ACTION OF IONIZING PARTICLE (SRAVNENIE DISPERSNOSTI SKRYTOGO IZOBRAZHENIYA, OBRAZOVANNOGO DEISTVIEM SVETA I DEISTVIEM IONIZUYSHCHIKH CHASTITS),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Kartuzhanskii,A. L.

Report Date : 06 OCT 1967

Pagination or Media Count : 13

Abstract : Sensitograms (A-D), prepd. by exposing Panchrome-10 neg. film to light for 60 sec. (A), light for 10 microsec. (B), the action of strongly ionizing alpha-particles from 210Po (C), and the action of weakly ionizing beta-particles from 32P (D), were treated in an identical manner. The kinetics of development, of regression and the Herschel effect were practically the same for (C) AS FOR (B). The development time decreased in the order (A) > (B), (C) > (D), and the rate of regression was in the order (D) > (C) > or = (B) > (A). Sensitization with triethanolamine was in the relative order (A) > (B), (C) > (D). On desensitization with 0.05% chromic acid, the loss in sensitivity was 0.95, 1.36, 1.30, and >1.6 for (A), (B), (C), and (D), resp. The photometric equiv., which constitutes a measure of the dispersity of the latent image, was 2.6, 3.0, 2.9, and 3.4, resp. The results obtained demonstrated the high dispersity of latent images produced by ionizing particles vs. that produced by light; the light image with the highest dispersity (B) corresponds to the particle image with the lowest dispersity (C). It follows from this that photographic characteristics which depend on continuous changes in dispersity of the latent image do not overlap for the two types of radiation. (Author)

Descriptors :   (*PHOTOGRAPHIC IMAGES, SCATTERING), LIGHT, BETA PARTICLES, ALPHA PARTICLES, PHOTOGRAPHIC FILM, SENSITIVITY, ADDITIVES, CHROMIC ACID, AMINES, USSR

Subject Categories : Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE