Energy spectrum measurement and dose rate estimation of natural neutrons in Tibet region

Jian-Hua WU; Yong-Jun XU; Sen-Lin LIU; Chuan-Gao WANG

doi:10.13538/j.1001-8042/nst.26.060202

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Energy spectrum measurement and dose rate estimation of natural neutrons in Tibet region

LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS | Updated：2021-01-20

- Energy spectrum measurement and dose rate estimation of natural neutrons in Tibet region
- Nuclear Science and Techniques Vol. 26, Issue 6, Article number: 060202(2015)
- Affiliations：
  
  1.Department of Radiation Security, China Institute of Atomic Energy, Beijing 102413, China
- Author bio：
  
  Corresponding author, li000201@sohu.com
- Funds：
- DOI：10.13538/j.1001-8042/nst.26.060202
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Jian-Hua WU, Yong-Jun XU, Sen-Lin LIU, et al. Energy spectrum measurement and dose rate estimation of natural neutrons in Tibet region. [J]. Nuclear Science and Techniques 26(6):060202(2015)
DOI：

Jian-Hua WU, Yong-Jun XU, Sen-Lin LIU, et al. Energy spectrum measurement and dose rate estimation of natural neutrons in Tibet region. [J]. Nuclear Science and Techniques 26(6):060202(2015) DOI： 10.13538/j.1001-8042/nst.26.060202.

摘要

Abstract

In this work, natural neutron spectra at nine sites in Tibet region were measured using a multi-sphere neutron spectrometer. The altitude-dependence of the spectra total fluence rate and ambient dose equivalent rate were analyzed. From the normalized natural neutron spectra at different altitudes, the spectrum fractions for neutrons of greater than 0.1 MeV do not differ obviously, while those of the thermal neutrons differ greatly from each other. The total fluence rate, effective dose rate and the ambient dose equivalent rate varied with the altitude according to an exponential law.

关键词

Keywords

Natural neutronSpectrumEffective dose rateTibet

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