Several techniques for improving energy dependence of a commercial personal neutron dosemeter package based on PADC track detector

Abstract

A practical applicability of several techniques to a commercial dose-assessment service has been investigated for improving the energy dependence of the personal neutron dosemeter based on PADC plastic track detector. Under a constraint of no modification in detector material and the fixed chemical processes, two technical attempts have been investigated; an analysis of etch-pit data obtained by microscopic observation and a devise of radiator structure. In addition to the number of etch-pits, another information of their distribution in some parameter has been obtained in the former technique. It was found that the two-window method was possibly applicable to the distribution in the etch-pit size and the gray level. In the latter, a performance of radiator-degrader structure has been confirmed experimentally, and it was found to be one of most promising techniques.

Thresholds of Etchable Track Formation and Chemical Damage Parameters in Poly(ethylene terephthalate), Bisphenol A polycarbonate, and Poly(allyl diglycol carbonate) Films at the Stopping Powers Ranging from 10 to 12,000 keV/µm

“…[1][2][3] PADC is a well-known solid state nuclear track detector, SSNTD, under the trade name of CR-39, which can record recoil protons from several 10 MeV neutrons. [4][5][6][7][8] The observed high G values of scissions at the bonds for gamma rays, protons and He ions are helpful for us to understand the excellent track registration property of proton or He ion in the relatively low stopping power region that covers the etch pit detection threshold. In these studies, we have conducted a series of Fourier transform infrared (FT-IR) spectral measurements of PADC films before and after the exposures.…”