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Radiation Protection Dosimetry 20:89-93 (1987)
© 1987 Oxford University Press

Recent Developments in a Neutron Dosimetry System Based on the Chemical Etch of CR-39

J.R. Harvey and A.R. Weeks

A simple system which can be used to assess rapidly the area density of chemically etched pits is described. Studies of its application to neutron dosimetry using CR-39 have recently been extended. It has been shown that the previously reported fast neutron low energy threshold of 180 keV can be reduced to below 140 keV. Various boron-coated foils have been used to demonstrate that the system can also be used to measure thermal neutron exposure over a range exceeding seven decades. It would therefore form the ideal detection system for an albedo dosemeter. Two or three fast neutron sensitive CR-39 elements set back at an angle of about 35o together with a thermal neutron sensitive albedo element would constitute a personal neutron dosimetry system with energy and angular response close to the ideal.


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G. W. Phillips, J. E. Spann, J. S. Bogard, T. VoDinh, D. Emfietzoglou, R. T. Devine, and M. Moscovitch
Neutron spectrometry using CR-39 track etch detectors
Radiat Prot Dosimetry, September 1, 2006; 120(1-4): 457 - 460.
[Abstract] [Full Text] [PDF]


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