Abstract:
:Electron paramagnetic resonance spectra and dose-response curves are presented for a variety of wallboard samples obtained from different manufacturing facilities, as well as for source gypsum and anhydrite. The intensity of the CO(3)(-) paramagnetic centre (G2) is enhanced with gamma radiation. Isothermal decay curves are used to propose annealing methods for the removal of the radiosensitive CO(3)(-) radical without affecting the unirradiated baseline. Post-irradiation annealing of wallboard prevents recuperation of the radiosensitive CO(3)(-) radical with additional irradiation. A single-aliquot additive dose procedure is developed that successfully measures test doses as low as 0.76 Gy.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Mistry R,Thompson JW,Boreham DR,Rink WJdoi
10.1093/rpd/ncq581subject
Has Abstractpub_date
2011-11-01 00:00:00pages
512-6issue
4eissn
0144-8420issn
1742-3406pii
ncq581journal_volume
147pub_type
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