Department of Physics and Astronomy: Publications and Other Research
Date of this Version
January 1970
Abstract
A recent theory of particle tracks assumes that the probability P for grain development in nuclear emulsion depends on the local dose E of ionization energy deposited by secondary electrons (delta rays) in the neighborhood of the particle track. The response is assumed to be one of exponential survival; that is, if E0 is the dose for 37% survival, then P = 1 – exp (-E/E0). By calculation of the dose E(t) deposited at depth t in the emulsion by normally incident, monoenergetic electron beams, and applying the assumed dose-effect relationship, response curves giving blackness versus electron fluence are obtained, in terms of E0 and a second parameter combining the effects of the density of undeveloped grains, the developed grain size, densitometer optics, and light scattering. Calculated and measured curves are compared.
Comments
Published in Nuclear Instruments and Methods 79 (1970), pp. 320-324. Copyright © North-Holland Publishing Co./Elsevier. Used by permission. http://www.sciencedirect.com/science/journal/01675087 Supported by the U. S. Atomic Energy Commission and the National Science Foundation.