Abstract
ABSTRACT We discuss the principles and advantages of a new method of detecting charged particles of very short range. The dosimeter consists of a submicron film of a track-recording polymer that has been spin-coated onto a readout system consisting of a very thin, alkali-resistant metal film evaporated onto a rugged transparent base. Two stages of etching of the irradiated dosimeter lead to large holes in the metal film that can easily be counted in a fiche reader or a microscope or read out electronically with a simple device such as a Reticon. With a polyethylene cover, neutrons down to 10 or 20 keV can be detected; with a bare dosimeter, alphas down to −100 keV can be detected.
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