A passive neutron dosemeter for measurements in mixed neutron-photon radiation fields

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Abstract

The project combines the highly sensitive salt
(NaCl) dosemeter for photon radiation with a neutronphoton
converter in the form of thin gadolinium foils
enclosing the salt. Using an identical salt dosemeter but
without gadolinium cover determines the primary
photon contribution. With these twin dosemeters placed
in a polyethylene sphere, both photon and neutron dose
contributions can be estimated. This paper describes the
design and optimization of the construction as well as
tests and a preliminary calibration of the dosemeter for
estimation of neutron dose equivalent in the mixed
neutron and photon beam from a Cf-252 source.
Currently, the lowest neutron dose equivalent possible
to quantify is around 1 mSv. Some suggestions for
further improvements are also discussed.
Original languageEnglish
Title of host publicationMedical Physics in the Baltic States
Subtitle of host publicationProceedings of the 12th International Conference on Medical Physics
EditorsDiana Adliene
PublisherKaunas University Of Technology Press
Pages38-42
Publication statusPublished - 2015
Event12th International Conference on Medical Physics in the Baltic States - Kaunas University of Technology, Kaunas, Lithuania
Duration: 2015 Nov 52015 Nov 7
Conference number: 12
http://www.medphys.lt/medphys2015/
http://www.medphys.lt/medphys2015/

Publication series

NameMedical Physics in the Baltic States
PublisherProceedings of the 12th International Conference on Medical Physics
ISSN (Print)1822-5721

Conference

Conference12th International Conference on Medical Physics in the Baltic States
Country/TerritoryLithuania
CityKaunas
Period2015/11/052015/11/07
Internet address

Subject classification (UKÄ)

  • Medical and Health Sciences

Free keywords

  • Neutrons
  • Photons
  • Dosemeter
  • OSL
  • NaCl
  • Gd

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