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Title: Hand-held radio-isotope detection and identification instrument

Abstract

An instrument combining an array of Cadmium-Zinc-Telluride (CZT) detectors, a NaI scintillator, and two {sup 3}He neutron detectors has been constructed. The instrument uses the CZT array to identify radioactive materials. As an example of this application, the 3 {sigma} Minimum Detectable Activity for the 375 keV peak of {sup 238}Pu is less than 1 gram at a distance of 20 cm for a 100-second counting time. The 2 x 2 NaI scintillator has a dual purpose. First, it is used to supplement the CZT array for identification of high-energy gammas, such as those from {sup 60}Co. Second, the principle use of the NaI scintillator is to help search for radioactive material and to find a suitable measurement location on a suspect package for the CZT-based isotope-identification measurement. This detector also produces energy-corrected exposure-rate data. The {sup 3}He neutron detectors provide an additional confirmation of the presence of some plutonium isotopes. The neutron sensitivity is 90 counts per second at 20 cm from a moderated {sup 252}Cf neutron source.

Authors:
Publication Date:
Research Org.:
Bechtel Nevada Corporation (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
758112
Report Number(s):
DOE/NV/11718-376-ABS
TRN: US0003827
DOE Contract Number:  
AC08-96NV11718
Resource Type:
Conference
Resource Relation:
Conference: American Nuclear Society Topical Conference, 5th International Conference on Methods and Applications of Radioanalytical Chemistry (MARC V), Kailua-Kona, HI (US), 04/09/2000--04/14/2000; Other Information: PBD: 30 Apr 2000
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; RADIOISOTOPE SCANNERS; DESIGN; OPERATION; HE-3 COUNTERS; NAI DETECTORS; CDTE SEMICONDUCTOR DETECTORS; PLUTONIUM 238; COBALT 60

Citation Formats

W. M. Quam. Hand-held radio-isotope detection and identification instrument. United States: N. p., 2000. Web.
W. M. Quam. Hand-held radio-isotope detection and identification instrument. United States.
W. M. Quam. Sun . "Hand-held radio-isotope detection and identification instrument". United States. https://www.osti.gov/servlets/purl/758112.
@article{osti_758112,
title = {Hand-held radio-isotope detection and identification instrument},
author = {W. M. Quam},
abstractNote = {An instrument combining an array of Cadmium-Zinc-Telluride (CZT) detectors, a NaI scintillator, and two {sup 3}He neutron detectors has been constructed. The instrument uses the CZT array to identify radioactive materials. As an example of this application, the 3 {sigma} Minimum Detectable Activity for the 375 keV peak of {sup 238}Pu is less than 1 gram at a distance of 20 cm for a 100-second counting time. The 2 x 2 NaI scintillator has a dual purpose. First, it is used to supplement the CZT array for identification of high-energy gammas, such as those from {sup 60}Co. Second, the principle use of the NaI scintillator is to help search for radioactive material and to find a suitable measurement location on a suspect package for the CZT-based isotope-identification measurement. This detector also produces energy-corrected exposure-rate data. The {sup 3}He neutron detectors provide an additional confirmation of the presence of some plutonium isotopes. The neutron sensitivity is 90 counts per second at 20 cm from a moderated {sup 252}Cf neutron source.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {4}
}

Conference:
Other availability
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