In situ measurements of the sub-surface gamma dose from Chernobyl fallout

D. N. Timms*, J. T. Smith, E. Coe, A. V. Kudelsky, A. I. Yankov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Methods of estimating external radiation exposure of soil-dwelling organisms are currently of much research and regulatory interest. In this paper, we report the first in situ measurements of the sub-surface gamma dose rate for 137Cs contaminated land that quantify variation in dose rate with depth. Two contrasting sites have been investigated. The first site comprised a mineral type soil with a low percentage of organic matter and the second site chosen was in a peat-bog. The different soil compositions afford different 137Cs mobility and this results in variations in the measured gamma dose-rate with soil depth. For each site the paper reports the measured dose rates, the 137Cs activity depth profile, the 137Cs inventory and a description of the soil-characteristics. It is suggested that these data can be used to produce estimates of the sub-surface gamma dose rate in other sites of 137Cs contamination.

Original languageEnglish
Pages (from-to)923-930
Number of pages8
JournalApplied Radiation and Isotopes
Issue number6
Early online date13 Jan 2005
Publication statusPublished - 1 Jun 2005


  • 137Cs
  • Belarus
  • Chernobyl
  • gamma
  • in situ dose rate
  • radiation dose
  • radiocaesium
  • soils


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