DocumentCode
3138696
Title
A microwave-based gamma-ray detector
Author
Cetinoneri, B. ; Atesal, Y.A. ; Kroeger, R.A. ; Tepper, G. ; Losee, J. ; Hicks, C. ; Rasmussen, Morten ; Rebeiz, Gabriel M.
Author_Institution
University of California San Diego, La Jolla, United States
fYear
2010
fDate
23-28 May 2010
Firstpage
1
Lastpage
1
Abstract
This paper presents a contactless, microwave-based gamma ray detector for detecting low-energy gamma ray photons. The detection is based on a microwave cavity perturbation method, and uses a reflection-type cavity resonator with a detector-grade CZT crystal. The reflected power from the cavity is measured and monitors the changes in the photoconductivity of the CZT crystal in the presence of a gamma-ray. A gamma ray detection sensitivity of 100 keV is achieved at room temperature. The proposed system can be used in homeland security or radioactive material characterization applications.
Keywords
Cavity perturbation methods; Cavity resonators; Gamma ray detection; Gamma ray detectors; Microwave theory and techniques; Photoconductivity; Photonic crystals; Power measurement; Temperature sensors; Terrorism;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location
Anaheim, CA
ISSN
0149-645X
Print_ISBN
978-1-4244-6056-4
Electronic_ISBN
0149-645X
Type
conf
DOI
10.1109/MWSYM.2010.5517372
Filename
5517372
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