A microwave-based gamma-ray detector

Author

Cetinoneri, Berke ; Atesal, Yusuf A. ; Kroeger, Richard A. ; Tepper, Gary ; Losee, Jon ; Hicks, Charles ; Rasmussen, Marc ; Rebeiz, Gabriel M.

Author_Institution

Univ. of California, San Diego, La Jolla, CA, USA

fYear

2010

fDate

23-28 May 2010

Firstpage

469

Lastpage

472

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 this 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 resonators; gamma-ray detection; photoconductivity; contactless gamma ray detector; detector grade CZT crystal; gamma ray photon; microwave based gamma ray detector; microwave cavity perturbation method; photoconductivity; reflection type cavity resonator; Cavity perturbation methods; Cavity resonators; Gamma ray detection; Gamma ray detectors; Microwave theory and techniques; Photoconductivity; Photonic crystals; Power measurement; Temperature sensors; Terrorism; Cavity resonator; Q factor; gamma ray detector; microwave cavity perturbation;

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.2010.5515945

Filename

5515945