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Title: Experimental validation of the intrinsic spatial efficiency method over a wide range of sizes for cylindrical sources

Abstract

The intrinsic spatial efficiency method is a new absolute method to determine the efficiency of a gamma spectroscopy system for any extended source. In the original work the method was experimentally demonstrated and validated for homogeneous cylindrical sources containing {sup 137}Cs, whose sizes varied over a small range (29.5 mm radius and 15.0 to 25.9 mm height). In this work we present an extension of the validation over a wide range of sizes. The dimensions of the cylindrical sources vary between 10 to 40 mm height and 8 to 30 mm radius. The cylindrical sources were prepared using the reference material IAEA-372, which had a specific activity of 11320 Bq/kg at july 2006. The obtained results were better for the sources with 29 mm radius showing relative bias lesser than 5% and for the sources with 10 mm height showing relative bias lesser than 6%. In comparison with the obtained results in the work where we present the method, the majority of these results show an excellent agreement.

Authors:
;  [1];  [2]
  1. Departamento de Física, Facultad de Ciencias, Universidad de Chile (Chile)
  2. Departamento de Física, Universidad Tecnológica Metropolitana (Chile)
Publication Date:
OSTI Identifier:
22608519
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1753; Journal Issue: 1; Conference: Latin American symposium on nuclear physics and applications, Medellin (Colombia), 30 Nov - 4 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CESIUM 137; COMPARATIVE EVALUATIONS; CYLINDRICAL CONFIGURATION; EFFICIENCY; GAMMA SPECTROSCOPY

Citation Formats

Ortiz-Ramŕez, Pablo, Larroquette, Philippe, and Camilla, S. Experimental validation of the intrinsic spatial efficiency method over a wide range of sizes for cylindrical sources. United States: N. p., 2016. Web. doi:10.1063/1.4955372.
Ortiz-Ramŕez, Pablo, Larroquette, Philippe, & Camilla, S. Experimental validation of the intrinsic spatial efficiency method over a wide range of sizes for cylindrical sources. United States. https://doi.org/10.1063/1.4955372
Ortiz-Ramŕez, Pablo, Larroquette, Philippe, and Camilla, S. 2016. "Experimental validation of the intrinsic spatial efficiency method over a wide range of sizes for cylindrical sources". United States. https://doi.org/10.1063/1.4955372.
@article{osti_22608519,
title = {Experimental validation of the intrinsic spatial efficiency method over a wide range of sizes for cylindrical sources},
author = {Ortiz-Ramŕez, Pablo and Larroquette, Philippe and Camilla, S.},
abstractNote = {The intrinsic spatial efficiency method is a new absolute method to determine the efficiency of a gamma spectroscopy system for any extended source. In the original work the method was experimentally demonstrated and validated for homogeneous cylindrical sources containing {sup 137}Cs, whose sizes varied over a small range (29.5 mm radius and 15.0 to 25.9 mm height). In this work we present an extension of the validation over a wide range of sizes. The dimensions of the cylindrical sources vary between 10 to 40 mm height and 8 to 30 mm radius. The cylindrical sources were prepared using the reference material IAEA-372, which had a specific activity of 11320 Bq/kg at july 2006. The obtained results were better for the sources with 29 mm radius showing relative bias lesser than 5% and for the sources with 10 mm height showing relative bias lesser than 6%. In comparison with the obtained results in the work where we present the method, the majority of these results show an excellent agreement.},
doi = {10.1063/1.4955372},
url = {https://www.osti.gov/biblio/22608519}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1753,
place = {United States},
year = {Thu Jul 07 00:00:00 EDT 2016},
month = {Thu Jul 07 00:00:00 EDT 2016}
}