EXTERNAL GAMMA-DOSE RATES DELIVERED FROM THE CHERNOBYL FALLOUT IN BYELARUS

被引：3

作者：

KADATSKY, VB

KAGAN, LM

机构：

[1] Institute for Problems in the Use of Natural Resources and Ecology of the Academy of Sciences of Belarus, 10 Staroborisovsky trakt, Minsk

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1995年 / 26卷 / 02期

关键词：

D O I：

10.1016/0265-931X(94)00006-I

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The gamma-dose rates in air were measured in time at various reference sites which had difference environmental characteristics. It appeals that the dose rate had fallen off from its peak value and more or less stabilized by the end of 1990. The model presented describes this behaviour and fits the experimental data well. All the study sires are subdivided into four groups according to the dose-decrease time constants which range between 2.9 and 7.1 years. Causes of such different temporal decreases at various sites are discussed. Dose commitment conversion factors were computed which allow estimation of external dose commitments at every site for various time periods. The findings may be applicable to other sites in Belarus with similar climate and landscape characteristics.

引用

页码：135 / 146

页数：12

共 12 条

[1]

Beck, Exposure Rate Conversion Factors for Radionuclides Deposited on the Ground, US Department of Energy Report EML-378, (1980)

[2]

Gale, Humphreys, Fisher, Weathering of caesium-137 in soil, Nature, 201, pp. 257-261, (1964)

[3]

Helfer, Miller, Calibration factors for Ge detectors used for field spectrometry, Health Phys., 55, pp. 15-29, (1988)

[4]

IAEA, International Chernobyl Project. Technical report. Assessment of Radiological Consequences and Protection Measures, Report of the International Consultation Committee, (1992)

[5]

Izrael, Et al., Chernobyl: Radioactive contamination of natural environments, (1990)

[6]

Jacob, Meckbach, Muller, Reduction of external exposure from deposited Chernobyl activity by run-off, weathering, street cleaning and migration in the soil, Radiation Protection Dosimetry, 21, pp. 51-57, (1987)

[7]

Karlberg, Weathering and migration of Chernobyl fallout in Sweden, Radiation Protection Dosimetry, 21, pp. 75-78, (1987)

[8]

Miller, Kuiper, Helfer, <sup>137</sup>Cs fallout depth distributions in forest versus field sites: Implications for external gamma dose rates, J. Environ. Radioactivity, 12, pp. 23-47, (1990)

[9]

Romanov, Spirin, Alexakhin, The Kyshtym disaster: A close up. Radioactive substances in the environment, Nature (USSR), 5, pp. 53-58, (1990)

[10]

United Nations, Ionizing radiation: Sources and biological effects, United Nations Scientific Committee on the Effects of Atomic Radiation 1982 Report to the General Assembly, (1982)

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