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Beta and gamma gradients

Authors
Journal
Nuclear Tracks and Radiation Measurements (1982)
0735-245X
Publisher
Elsevier
Publication Date
Volume
10
Identifiers
DOI: 10.1016/0735-245x(85)90071-7

Abstract

Abstract Experimental and/or theoretical estimates are presented concerning (i) attenuation within the sample of beta and gamma radiation from the soil, (ii) the gamma dose within the sample due to its own radioactivity, and (iii) the soil gamma dose in the proximity of boundaries between regions of differing radioactivity. It is confirmed that removal of the outer 2 mm of sample is adequate to remove influence from soil beta dose and estimates are made of the error introduced by non-removal. Other evaluations include variation of the soil gamma dose near the ground surface and it appears that the present practice of avoiding samples above a depth of 0.3 m may be over-cautious.

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