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An evaluation of the natural radioactivity in Andaman beach sand samples of Thailand after the 2004 tsunami.

Malain, D, Regan, PH, Bradley, DA, Matthews, M, Al-Sulaiti, HA and Santawamaitre, T (2012) An evaluation of the natural radioactivity in Andaman beach sand samples of Thailand after the 2004 tsunami. Appl Radiat Isot, 70 (8). pp. 1467-1474.

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Abstract

Following the 2004 'Boxing day' tsunami, a determination has been made of the activity concentrations of (226)Ra, (232)Th and (40)K in beach sand samples which have been collected from various locations along the Andaman coast of the Thai peninsula. Use has been made of a HPGe detector-based, low-background gamma-ray counting system. The natural radioactivity levels of (226)Ra, (232)Th and (40)K measured from these samples was found to lie in the range 1.6-52.5, 0.3-73.9 and 2.8-1111.9Bq/kg respectively for the west coast and 3.5-83.1, 4.5-42.0, and 9.6-1376 Bq/kg respectively for the east coast. The radioactivity concentrations of (226)Ra, (232)Th and (40)K along the Andaman coast are comparable to that of the east coast, which was not exposed to the tsunami. The corresponding annual effective dose varies from 1.6-105.9 μSv/y with a mean value of 59.1 ± 0.3 μSv/y, significantly lower than the worldwide average as reported by United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) (2000).

Item Type: Article
Authors :
NameEmailORCID
Malain, DUNSPECIFIEDUNSPECIFIED
Regan, PHp.regan@surrey.ac.ukUNSPECIFIED
Bradley, DAd.a.bradley@surrey.ac.ukUNSPECIFIED
Matthews, Mm.matthews@surrey.ac.ukUNSPECIFIED
Al-Sulaiti, HAUNSPECIFIEDUNSPECIFIED
Santawamaitre, TUNSPECIFIEDUNSPECIFIED
Date : August 2012
Identification Number : 10.1016/j.apradiso.2012.04.017
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:29
Last Modified : 17 May 2017 15:04
URI: http://epubs.surrey.ac.uk/id/eprint/835547

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