By Topic

Portable gamma-ray monitor composed of a compact electrically cooled Ge detector and a mini-MCA system

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
M. Katagiri ; Japan Atomic Energy Res. Inst., Ibaraki, Japan ; A. Birumachi ; K. Sakasai ; K. Takahashi

A portable gamma-ray monitor composed of a compact electrically cooled germanium detector and a mini-MCA system was developed for in situ gamma-ray monitoring with very fast starting time and easy operation. This detector is suitable for an accident, an emergency, a fast inspection, and an easy analysis since the detector could acquire data after a 51 min cooling time. The size of Ge detector cryostat was 10.2 cmφ×39.3 cm and the weight 5.2 kg. A small Stirling refrigerator could cool down a 14 cm3 planar-type high purity Ge detector with the relative detection efficiency of 1% automatically with low power driving electronics. After cooling down, gamma-ray data were acquired and analyzed repeatedly by a mini-MCA system interfaced to a very small hand held computer. The energy resolution of the detector was 2.46 keV at an energy of 1.33 MeV. Consequently, a user can comfortably analyze a gamma-ray spectrum with radionuclide identification and quantitative analysis by watching the display on the hand held computer.

Published in:

IEEE Transactions on Nuclear Science  (Volume:50 ,  Issue: 4 )