Supralinearity in nuclear research emulsions
作者:
Leif Larsson,
F.E. Pinkerton,
Robert Katz,
期刊:
Radiation Effects
(Taylor Available online 1977)
卷期:
Volume 34,
issue 1-3
页码: 15-24
ISSN:0033-7579
年代: 1977
DOI:10.1080/00337577708233119
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Nuclear emulsions processed in discriminating developers, intended to suppress small latent image sites, exhibit supralinear sensitometric blackness-exposure curves, whose character varies according to developing time, concentration, and composition, yielding hittedness ranging from 1 to 8, singly and in combination. These emulsion-processing combinations display the phenomena called ion-kill (sensitization by the transit of a single charged particle) and gamma- kill (sensitization by the overlap of secondary electron paths, whether from x-rays or from the delta-rays of heavy ions) in radiobiology. Here emulsions are blackened by x-rays when these same plates reveal no electron tracks, or no alpha-particle tracks, or even no fission fragment tracks. The supralinearity of the emulsion response to x-rays, and the consequent suppression of low LET radiations suggest that these materials have the potential to mimic the response of biological systems to particulate radiations of different charge and speed.
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