Online optical monitor of alpha radiations using a polymeric solid state nuclear track detector CR-39

作者：Kulkarni Atul; Vyas Chirag K; Kim Hojoong; Kalsi Puran C; Kim Taesung; Manchanda Vijay^*

来源：Sensors and Actuators B: Chemical , 2012, 161(1): 697-701.

DOI：10.1016/j.snb.2011.11.016

• Radiation sensor
• Solid state nuclear track detectors
• Optical fiber sensor
• Reflectance
• Nuclear radiations

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).

• 出版日期2012-1-3