A Model For Remote Depth Estimation Of Buried Radioactive Wastes Using CdZnTe Detector

Ukaegbu, Ikechukwu and Akurugoda Gamage, Kelum (2018) A Model For Remote Depth Estimation Of Buried Radioactive Wastes Using CdZnTe Detector. Sensors, 18 (5). ISSN 1424-8220

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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 proposed a performance parameter for evaluating radiation detection systems that implement this remote depth estimation method.

Item Type:
Journal Article
Journal or Publication Title:
Sensors
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
125218
Deposited By:
Deposited On:
16 May 2018 15:56
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Dec 2020 05:46