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Profiling the gamma-ray distribution of the cement lining of an established nuclear pond as a function of depth.

Shippen, B. A. and Joyce, Malcolm J. (2007) Profiling the gamma-ray distribution of the cement lining of an established nuclear pond as a function of depth. In: European Nuclear Congress, 2007-09-162007-09-20, Brussels, Belgium.

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Abstract

An investigation to determine the relationship between the depth of contamination within the concrete lining of a nuclear pond and the ratio of x-ray to gamma-ray photopeak intensity obtained from sodium iodide detector is described. The environment was simulated using established radiation transport codes. Caesium-137 is assumed to be the sole source of contamination. A detector was simulated across the energy spectrum of a source, and rastered across its location from ±10cm at intervals of 0.5cm. A combination of point and distributed sources were simulated within a concrete structure, as well as in free air to create a comprehensive set of data. The results were then validated against experimental data and demonstrate a high level of agreement. This investigation indicates that the x-ray / gamma-ray ratio has the potential to localise contamination on the surface of the concrete lining; further investigation is required to locate the contamination in three dimensions.

Item Type: Conference or Workshop Item (Paper)
Journal or Publication Title: European Nuclear Congress
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 39823
Deposited By: Mrs Yaling Zhang
Deposited On: 25 Feb 2011 10:34
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 06:14
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/39823

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