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The determination of the depth of localised radioactive contamination by 137Cs and 60Co in sand with principal component analysis

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The determination of the depth of localised radioactive contamination by 137Cs and 60Co in sand with principal component analysis. / Adams, Jamie; Mellor, Matthew; Joyce, Malcolm.

In: Environmental Science and Technology, Vol. 45, No. 19, 2011, p. 8262-8267.

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@article{d8330fb767824c019741f3f326ad5844,
title = "The determination of the depth of localised radioactive contamination by 137Cs and 60Co in sand with principal component analysis",
abstract = "A method to determine the depth of buried localized radioactive contamination nonintrusively and nondestructively using principal component analysis is described. The γ-ray spectra from two radionuclides, cesium-137 and cobalt-60, have been analyzed to derive the two principal components that change most significantly as a result of varying the depth of the sources in a bespoke sand-filled phantom. The relationship between depth (d) and the angle (θ) between the first two principal component coefficients has been derived for both cases, viz.where x and y are constants dependent on the shielding material and the γ-ray energy spectrum of the radioactivity in question, and φ is a function of θ. The technique enables the depth of a localized radioactive source to be determined nonintrusively in the range 5 to 50 mm with an accuracy of ±1 mm.",
author = "Jamie Adams and Matthew Mellor and Malcolm Joyce",
year = "2011",
doi = "10.1021/es201619r",
language = "English",
volume = "45",
pages = "8262--8267",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "19",

}

RIS

TY - JOUR

T1 - The determination of the depth of localised radioactive contamination by 137Cs and 60Co in sand with principal component analysis

AU - Adams, Jamie

AU - Mellor, Matthew

AU - Joyce, Malcolm

PY - 2011

Y1 - 2011

N2 - A method to determine the depth of buried localized radioactive contamination nonintrusively and nondestructively using principal component analysis is described. The γ-ray spectra from two radionuclides, cesium-137 and cobalt-60, have been analyzed to derive the two principal components that change most significantly as a result of varying the depth of the sources in a bespoke sand-filled phantom. The relationship between depth (d) and the angle (θ) between the first two principal component coefficients has been derived for both cases, viz.where x and y are constants dependent on the shielding material and the γ-ray energy spectrum of the radioactivity in question, and φ is a function of θ. The technique enables the depth of a localized radioactive source to be determined nonintrusively in the range 5 to 50 mm with an accuracy of ±1 mm.

AB - A method to determine the depth of buried localized radioactive contamination nonintrusively and nondestructively using principal component analysis is described. The γ-ray spectra from two radionuclides, cesium-137 and cobalt-60, have been analyzed to derive the two principal components that change most significantly as a result of varying the depth of the sources in a bespoke sand-filled phantom. The relationship between depth (d) and the angle (θ) between the first two principal component coefficients has been derived for both cases, viz.where x and y are constants dependent on the shielding material and the γ-ray energy spectrum of the radioactivity in question, and φ is a function of θ. The technique enables the depth of a localized radioactive source to be determined nonintrusively in the range 5 to 50 mm with an accuracy of ±1 mm.

U2 - 10.1021/es201619r

DO - 10.1021/es201619r

M3 - Journal article

VL - 45

SP - 8262

EP - 8267

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 19

ER -