On the effect of updated MCNP photon cross section data on the simulated response of the HPA TLD

Jonathan Eakins*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The relative response of the new Health Protection Agency thermoluminescence dosemeter (TLD) has been calculated for Narrow Series X-ray distribution and 137Cs photon sources using the Monte Carlo code MCNP5, and the results compared with those obtained during its design stage using the predecessor code, MCNP4c2. The results agreed at intermediate energies (∼0.1 MeV to 137Cs), but differed at low energies (<0.1 MeV) by up to ∼10%. This disparity has been ascribed to differences in the default photon interaction data used by the two codes, and derives ultimately from the effect on absorbed dose of the recent updates to the photoelectric cross sections. The sources of these data have been reviewed.

Original languageEnglish
Pages (from-to)66-71
Number of pages6
JournalRadiation Protection Dosimetry
Volume134
Issue number1
DOIs
Publication statusPublished - 2009

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