Title :
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
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;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2006.878572
