Online gamma dose-rate measurements by means of a self-powered gamma detector

Author

Van Nieuwenhove, Rudi ; Vermeeren, Ludo

Author_Institution

SCK/CEN, Mol, Belgium

Volume

49

Issue

4

fYear

2002

fDate

8/1/2002 12:00:00 AM

Firstpage

1914

Lastpage

1918

Abstract

Gamma dose-rate profiles have been measured by means of a self-powered gamma detector (SPGD) in a gamma irradiation facility using ⁶⁰Co sources, situated in the side pool of the BR2 materials testing reactor. Because of its small size (diameter of only 4 mm), the SPGD is ideally suited to perform very localized gamma dose-rate measurements. It has been shown that the SPGD can provide precise relative measurements of the local gamma dose rate in the range 0.5-20 kGy/h. A very detailed Monte Carlo code has been developed to relate the gamma dose rate (for a given gamma spectrum) to the current induced by the SPGD. The obtained conversion factor could thus be used to determine the absolute gamma dose rate.

Keywords

Monte Carlo methods; dosimeters; gamma-ray detection; particle detectors; ⁶⁰Co source; Monte Carlo code; gamma dose-rate measurements; self-powered gamma detector; FETs; Gamma ray detection; Gamma ray detectors; Gamma rays; Gas detectors; Inductors; Ionization chambers; Ionizing radiation; Nuclear measurements; Size measurement;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2002.801486

Filename

1043592