首页> 外文期刊>Radiation Protection Dosimetry >SPECTRAL CORRECTION FACTORS FOR CONVENTIONAL NEUTRON DOSE METERS USED IN HIGH-ENERGY NEUTRON ENVIRONMENTS-IMPROVED AND EXTENDED RESULTS BASED ON A COMPLETE SURVEY OF ALL NEUTRON SPECTRA IN IAEA-TRS-403
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SPECTRAL CORRECTION FACTORS FOR CONVENTIONAL NEUTRON DOSE METERS USED IN HIGH-ENERGY NEUTRON ENVIRONMENTS-IMPROVED AND EXTENDED RESULTS BASED ON A COMPLETE SURVEY OF ALL NEUTRON SPECTRA IN IAEA-TRS-403

机译:基于IAEA-TRS-403中所有中子谱的完整调查,在高能中子环境中使用的常规中子剂量计量的光谱校正因子得到了改进和扩展的结果

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摘要

This paper presents improved and extended results of our previous study on corrections for conventional neutron dose meters used in environments with high-energy neutrons (E_n > 10MeV). Conventional moderated-type neutron dose meters tend to underestimate the dose contribution of high-energy neutrons because of the opposite trends of dose conversion coefficients and detection efficiencies as the neutron energy increases. A practical correction scheme was proposed based on analysis of hundreds of neutron spectra in the IAEA-TRS-403 report. By comparing ~(252)Cf-calibrated dose responses with reference values derived from fluence-to-dose conversion coefficients, this study provides recommendations for neutron field characterization and the corresponding dose correction factors. Further sensitivity studies confirm the appropriateness of the proposed scheme and indicate that (1) the spectral correction factors are nearly independent of the selection of three commonly used calibration sources: ~(252)Cf, ~(241)Am-Be and ~(239)Pu-Be; (2) the derived correction factors for Bonner spheres of various sizes (6"-9") are similar in trend and (3) practical high-energy neutron indexes based on measurements can be established to facilitate the application of these correction factors in workplaces.
机译:本文介绍了我们先前对高能中子(E_n> 10MeV)环境中使用的常规中子剂量计校正研究的改进和扩展结果。常规的中型中子剂量计往往会低估高能中子的剂量贡献,因为随着中子能量的增加,剂量转换系数和检测效率的变化趋势相反。基于对IAEA-TRS-403报告中数百个中子光谱的分析,提出了一种实用的校正方案。通过将〜(252)Cf校准的剂量响应与从注量剂量转换系数得出的参考值进行比较,本研究为中子场表征和相应的剂量校正因子提供了建议。进一步的灵敏度研究证实了所提出方案的适当性,并表明(1)光谱校正因子几乎与三个常用校准源的选择无关:〜(252)Cf,〜(241)Am-Be和〜(239) Pu-Be; (2)各种尺寸(6“ -9”)的Bonner球的推导校正因子在趋势上相似,并且(3)可以基于测量结果建立实用的高能中子指数,以促进这些校正因子在工作场所中的应用。

著录项

  • 来源
    《Radiation Protection Dosimetry》 |2017年第1期|87-95|共9页
  • 作者单位

    Institute for Risk and Uncertainty, University of Liverpool, Liverpool L69 7ZF, UK,Institute of Nuclear Engineering and Science, National Tsing Hua University, 101 Sec. 2, Kung Fu Road, Hsinchu, Taiwan, R.O.C.;

    Institute of Nuclear Engineering and Science, National Tsing Hua University, 101 Sec. 2, Kung Fu Road, Hsinchu, Taiwan, R.O.C.;

    Institute of Nuclear Engineering and Science, National Tsing Hua University, 101 Sec. 2, Kung Fu Road, Hsinchu, Taiwan, R.O.C.;

    Institute of Nuclear Engineering and Science, National Tsing Hua University, 101 Sec. 2, Kung Fu Road, Hsinchu, Taiwan, R.O.C.,Institute of Nuclear Energy Research, Lungtan, Taoyuan, Taiwan, R.O.C.;

    Institute for Risk and Uncertainty, University of Liverpool, Liverpool L69 7ZF, UK;

    Institute of Nuclear Engineering and Science, National Tsing Hua University, 101 Sec. 2, Kung Fu Road, Hsinchu, Taiwan, R.O.C.,Department of Engineering and System Science, National Tsing Hua University, 101 Sec. 2, Kung Fu Road, Hsinchu, Taiwan, R.O.C.;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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