Published August 1990 | Version v1
Journal article

Self-dose and cosmic-ray dose of CaSO4:Tm (UD-200S) dosimeter

  • 1. Fukui Prefectural Institute of Public Health, Fukui (Japan)

Description

Measurement was made to determine self-dose at Mihoro Dam Tunnel where cosmic-ray was fairly attenuated. The dosimeter with Pb and Sn filter had the same self-dose of 0.26 nCkg-1h-1 as that without the filter. Our experiment shows that self-dose is due to any traces of natural radioactivity in the phosphor and the packaging. Cosmic-ray dose was evaluated 0.74 nCkg-1h-1 from our experiment at sea surface, and this value was somewhat smaller than the cosmic-ray intensity in Japan. The reason is considered to be low TL response for cosmic-ray hard component. (author)

Additional details

Publishing Information

Journal Title
Radioisotopes (Tokyo)
Journal Volume
39
Journal Issue
8
Series
Radioisotopes (Tokyo).
Journal Page Range
357-359
ISSN
0033-8303
CODEN
RAISA