A Compton-suppressed phoswich detector for radioxenon measurements

A phoswich detector with Compton suppression capability has been developed and assembled for measuring low concentration of xenon radioisotopes in the atmosphere. The phoswich detector has been designed with three scintillation layers. Beta-gamma coincidence events from radioxenon isotopes are ident...

Full description

Saved in:
Bibliographic Details
Main Authors: Farsoni, A. T., Alemayehu, B., Alhawsawi, A.
Format: Conference Proceeding
Language:English
Subjects:
Coatings
Energy resolution
Lead
Nitrogen
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A phoswich detector with Compton suppression capability has been developed and assembled for measuring low concentration of xenon radioisotopes in the atmosphere. The phoswich detector has been designed with three scintillation layers. Beta-gamma coincidence events from radioxenon isotopes are identified when a coincidence energy absorption is detected from the first (BC-400) and second (CsI(Tl) crystal) scintillation layers. To identify and reject scattered photons from CsI(Tl) crystal, the crystal is surrounded by a BGO scintillation layer. In this paper, detector assembly steps and our recent measurements with lab sources and radioxenon isotopes produced in the Oregon State University's TRIGA reactor will be discussed.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2011.6154451