Online optical monitor of alpha radiations using a polymeric solid state nuclear track detector CR-39
Online optical monitor of alpha radiations using a polymeric solid state nuclear track detector CR-39
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DOI：
10.1016/j.snb.2011.11.016
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发表时间：
2012-01-03
影响因子：
8.4
通讯作者：
Manchanda, Vijay
中科院分区：
文献类型：
--
作者：
Kulkarni, Atul;Vyas, Chirag K.;Manchanda, Vijay
福岛事故发生后，需要加紧努力，有效监测由于堆芯熔化或/和核燃料第一屏障安全壳失效引起的α发射放射性核素的释放。由于二甘醇双烯丙基碳酸酯 (CR-39) 暴露于 α 辐射（从 Th-232 发射），辐射损伤会导致其物理化学特性发生改变，例如吸光度、表面粗糙度和反射率，这些特性可能与化学蚀刻轨道密度相关，通常用于离线量化 α 辐射。基于反射测量的 CR-39 光纤传感器 (CRFOS) 已开发出来，旨在在线监测 α 发射放射性核素（核设施内/周围）的存在。 (C) 2011 Elsevier B.V. 保留所有权利。
In the wake of Fukushima accident, there is a need to intensify efforts to efficiently monitor the release of alpha emitting radionuclides caused by the core melt down or/and failure of first barrier containment of the nuclear fuel. As a consequence of the exposure of diethylene-glycol bis(allycarbonate) (CR-39) to alpha radiations (emitted from Th-232), radiation damage causes modification of its physico-chemical properties like absorbance, surface roughness and reflectance which could be correlated with the chemically etched track density, conventionally followed for the quantification of alpha-radiations offline. CR-39 based Fiber Optic Sensor (CRFOS) based on the reflectance measurement has been developed with an aim to monitor online the presence of alpha-emitting radionuclides (in/around a nuclear facility). (C) 2011 Elsevier B.V. All rights reserved.