No.7（2004）13.Dose estimation of X-ray irradiation and degradation of polymer materials

Masayuki SEKIGUCHI, Kazunari HOSOBUCHI, Itiro ENOMOTO

A new coating-type alanine dosimeters(φ6mm) were developed. The coating-layer of the dosimeters was controlled from 20 to 100μm in thickness, and alanine contents from 17 to 35 W/W %. The difference between the dosimeter and the alanine film dosimeter was investigated from a dose response. The influences of configuration of a dosimeter in cell holder and microwave power on the ESR signal height also examined. Those dosimeters were thin and small, so useful for estimation of dose distribution of irradiation field and depth dose profile of low energy irradiation. Dose response between the coating-type alanine dosimeter and RCD film dosimeter for low energy electron beam showed a linear relationship. Radiation effects for mechanical strength of film samples (PE, PTFE, PFA and FEP : 50μm) were examined by the new dosimeter with similar thickness to samples.

Keywords
Alanine dosimeter, Electron spin resonance, Low energy electron beam, Soft X-ray, Polymer film, Material degradation

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