Low-Level Radiation Measurement System With Magnetically Levitated Electrode Ionization Chamber Detector

Author

Kawaguchi, T. ; Futagami, K. ; Matoba, M. ; Wakabayashi, G. ; Ikeda, N. ; Uozumi, Y. ; Yamanaka, N. ; Kaneko, M.

Author_Institution

Fac. of Eng, Kyushu Sangyo Univ., Fukuoka

Volume

53

Issue

4

fYear

2006

Firstpage

2276

Lastpage

2280

Abstract

An automatic system was developed for the measurement of radiation using a magnetically levitated electrode ionization chamber. The system was used to measure background and ⁴⁰K gamma ray dose rates. The background dose rate measurement demonstrated high sensitivity and reliability of the system, and a low-level ⁴⁰K gamma ray dose rate was successfully measured. For the case of a 30-minute measurement, the detection limit of the system is 13 nGy/h. This measurement system will be useful as an area monitor to measure space dose rates

Keywords

dosimetry; electrodes; gamma-ray detection; ionisation chambers; radiation monitoring; reliability; ⁴⁰K gamma ray dose rates; background dose rate measurement; environmental radiation measurement; high sensitivity; low-level radiation measurement system; magnetically levitated electrode ionization chamber detector; radiation monitoring; reliability; space dose rate measurement; Area measurement; Current measurement; Electrodes; Engine cylinders; Extraterrestrial measurements; Ionization chambers; Ionizing radiation; Magnetic levitation; Radiation detectors; Vibration measurement; Environmental radiation measurement; magnetically levitated electrode ionization chamber;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2006.878572

Filename

1684101