A model for remote depth estimation of buried radioactive wastes using CdZnTe detector

Ukaegbu, I. K. and Gamage, K. A.A. (2018) A model for remote depth estimation of buried radioactive wastes using CdZnTe detector. Sensors, 18(5), 1612. (doi: 10.3390/s18051612)

[img]
Preview
Text
162530.pdf - Published Version
Available under License Creative Commons Attribution.

1MB

Publisher's URL: http://www.mdpi.com/1424-8220/18/5/1612

Abstract

This paper presents the results of an attenuation model for remote depth estimation of buried radioactive wastes using a Cadmium Zinc Telluride (CZT) detector. Previous research using an organic liquid scintillator detector system showed that the model is able to estimate the depth of a 329-kBq Cs-137 radioactive source buried up to 12 cm in sand with an average count rate of 100 cps. The results presented in this paper showed that the use of the CZT detector extended the maximum detectable depth of the same radioactive source to 18 cm in sand with a significantly lower average count rate of 14 cps. Furthermore, the model also successfully estimated the depth of a 9-kBq Co-60 source buried up to 3 cm in sand. This confirms that this remote depth estimation method can be used with other radionuclides and wastes with very low activity. Finally, the paper proposes a performance parameter for evaluating radiation detection systems that implement this remote depth estimation method.

Item Type:Articles
Additional Information:This work was supported by the Engineering and Physical Sciences Research Council (EP/N509231/1) and Nuclear Decommissioning Authority, U.K
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Gamage, Professor Kelum
Authors: Ukaegbu, I. K., and Gamage, K. A.A.
College/School:College of Science and Engineering > School of Engineering
Journal Name:Sensors
Publisher:MDPI
ISSN:1424-8220
ISSN (Online):1424-8220
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Sensors 18(5):1612
Publisher Policy:Reproduced under a Creative Commons License

University Staff: Request a correction | Enlighten Editors: Update this record