Brame R S, Groer P G
Nuclear Engineering Department, University of Tennessee, Knoxville, TN 37996-2300, USA.
Radiat Prot Dosimetry. 2003;104(1):61-3. doi: 10.1093/oxfordjournals.rpd.a006165.
Radiation doses received during a criticality accident will be from a combination of fission spectrum neutrons and gamma rays. It is desirable to estimate the total dose, as well as the neutron and gamma doses. Present methods for dose estimation with chromosome aberrations after a criticality accident use point estimates of the neutron to gamma dose ratio obtained from personnel dosemeters and/or accident reconstruction calculations. In this paper a Bayesian approach to dose estimation with chromosome aberrations is developed which allows the uncertainty of the dose ratio to be considered. Posterior probability densities for the total and the neutron and gamma doses were derived.
临界事故期间所接受的辐射剂量将来自裂变谱中子和伽马射线的综合作用。估算总剂量以及中子和伽马剂量是很有必要的。目前用于临界事故后染色体畸变剂量估算的方法，采用从人员剂量计和/或事故重建计算中获得的中子与伽马剂量比的点估计值。本文开发了一种利用染色体畸变进行剂量估算的贝叶斯方法，该方法能够考虑剂量比的不确定性。推导了总剂量以及中子和伽马剂量的后验概率密度。
