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| Natural neutron effective dose assessment to the residents in Tibet |
| CHEN Ran, XU Yongjun, WU Jianhua, LIU Senlin |
| China Instiute of Atomic Energy, Beijing 102413 China |
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Abstract Objective To evaluate the natural neutron average annual effective doses to Tibetan residents on basis of the measurement of ambient dose equivalent rate.Methods Based on the field survey data of natural neutron ambient dose equivalent rate and considering the correcting factors, the values of different region in Tibet were obtained pursuant to the local population weighted method.Results According to the results, population-weighted natural neutron average annual effective dose was 0.75±0.26 mSv/a in Tibet, and it's equivalent to the natural neutron average annual effective dose suffered by the residents living at about 3900m altitude.Conclusion The natural neutron average annual effective doses to Tibetan residents is at a high level about 8 times of the worldwide average value of 0.1 mSv.
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Received: 12 August 2017
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