Thin NaI(Tl) crystals to enhance the detection sensitivity for molten Am-241 sources

Show full item record



Permalink

http://hdl.handle.net/10138/314398

Citation

Peura , P , Bélanger-Champagne , C , Eerola , P , Dendooven , P & Huhtalo , E 2018 , ' Thin NaI(Tl) crystals to enhance the detection sensitivity for molten Am-241 sources ' , Applied Radiation and Isotopes , vol. 139 , pp. 121-126 . https://doi.org/10.1016/j.apradiso.2018.04.027

Title: Thin NaI(Tl) crystals to enhance the detection sensitivity for molten Am-241 sources
Author: Peura, Pauli; Bélanger-Champagne, Camille; Eerola, Paula; Dendooven, Peter; Huhtalo, Eero
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Date: 2018-09
Language: eng
Number of pages: 6
Belongs to series: Applied Radiation and Isotopes
ISSN: 0969-8043
URI: http://hdl.handle.net/10138/314398
Abstract: A thin 5-min NaI(Tl) scintillator detector was tested with the goal of enhancing the detection efficiency of( 241)Am gamma and X rays for steelworks operations. The performance of a thin (5 mm) NaI(Tl) detector was compared with a standard 76.2-mm thick NaI(Tl) detector. The 5-mm thick detector crystal results in a 55% smaller background rate at 60 keV compared with the thicker detector, translating into the ability to detect 30% weaker Am-241 sources. For a 5 mm thick and 76.2 mm diameter NaI detector in the ladle car tunnel at Outokumpu Tornio Works, the minimum activity of a molten Am-241 source that can be detected in 5 s with 95% probability is 9 MBq.
Subject: 114 Physical sciences
RADIOACTIVE MATERIALS
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
1_s2.0_S0969804317307509_main.pdf 1.508Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record