Abstract:
:Albedo dosemeters remain the most used dosemeters in neutron individual monitoring. In Brazil, most of the neutron occupational fields are from radionuclide sources, often without any moderation, where albedo dosemeters have poor energy response. The purpose of this work is to compare the HP(10) energy response of the IRD and ALNOR TLD albedo dosemeter systems, calculated by their modelling with Monte Carlo code MCNPX. Their energy responses are similar, as expected, but the IRD system is about five times more sensitive than the ALNOR one. IRD albedo system can measure the Brazilian monthly recording level of 0.2 mSv, even for bare 252Cf and 241Am-Be neutron fields. On the other hand, the ALNOR system can measure values higher than 0.2 mSv only after huge moderation of theses sources. These results show that IRD TLD albedo is more suitable than the ALNOR one to measure low doses at occupational fields from radionuclide sources.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Freitas BM,da Silva AX,Pereira WW,Mauricio CLPdoi
10.1093/rpd/ncx256subject
Has Abstractpub_date
2018-08-01 00:00:00pages
240-244issue
1-4eissn
0144-8420issn
1742-3406pii
4643388journal_volume
180pub_type
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