Study and presentation of a fast neutron and photon dosemeter for area and criticality monitoring using radiophotoluminescent glass

This paper describes the results of a study performed on a mixed field neutron/gamma (n/γ) area dosemeter incorporating radiophotoluminescent (RPL) glass detectors. RPL glass is known to be virtually insensitive to neutrons. The aim of the study was therefore to determine the neutron response of a d...

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Veröffentlicht in:Radiation protection dosimetry 2004-01, Vol.112 (3), p.359-370
Hauptverfasser: Girod, M., Bourgois, L., Cornillaux, G., Andre, S., Postaük, J.
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container_end_page 370
container_issue 3
container_start_page 359
container_title Radiation protection dosimetry
container_volume 112
creator Girod, M.
Bourgois, L.
Cornillaux, G.
Andre, S.
Postaük, J.
description This paper describes the results of a study performed on a mixed field neutron/gamma (n/γ) area dosemeter incorporating radiophotoluminescent (RPL) glass detectors. RPL glass is known to be virtually insensitive to neutrons. The aim of the study was therefore to determine the neutron response of a dosemeter designed to combine n/γ conversion with RPL detection capability. Monte Carlo calculations as well as measurements using monoenergetic beams and isotopic neutron sources showed this response to be constant, to within 30% in terms of H*(10), and independent of neutron energy from 250 keV to 10 MeV. For area monitoring, tests carried out in nuclear facilities (around PuO2 glove box and shipping casks containing PWR, MOX spent fuels or vitrified fission product) demonstrated that dosemeter response was accurate to within 15%, where the gamma component of the mixed n,γ field remained below 1 MeV. When exposed in the Silene reactor simulating a criticality accident (1017 fissions—liquid 235U—e.g. 1 Gy neutron and 1 Gy photon), the dosemeter exhibited good correlation with reference values and other measurement technologies (again to within 30%), for both neutron and gamma absorbed dose.
doi_str_mv 10.1093/rpd/nch416
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source MEDLINE; Oxford University Press Journals All Titles (1996-Current)
subjects Fast Neutrons
Glass
Isotopes
Models, Theoretical
Monte Carlo Method
Neutrons
Particle Accelerators
Photons
Radiation Dosage
Radiation Monitoring - methods
Radiometry - instrumentation
Radiometry - methods
Radiotherapy, High-Energy - methods
title Study and presentation of a fast neutron and photon dosemeter for area and criticality monitoring using radiophotoluminescent glass
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