Sensitivity of a mixed field dosimetry algorithm to uncertainties in thermoluminescent element readings.

Published

Journal Article

An error analysis of the effects of the algorithms used to resolve the deep and shallow dose components for mixed fields from multi-element thermoluminescent (TLD) badge systems was undertaken for a commonly used system. Errors were introduced independently into each of the four element readings for a badge, and the effects on the calculated dose equivalents were observed. A normal random number generator was then utilized to introduce simultaneous variations in the element readings for different uncertainties. The Department of Energy Laboratory Accreditation Program radiation fields were investigated. Problems arising from the discontinuous nature of the algorithm were encountered for a number of radiation sources for which the algorithm misidentified the radiation field. Mixed fields of low energy photons and betas were found to present particular difficulties for the algorithm. The study demonstrates the importance of small fluctuations in the TLD element's response in a multi-element approach.

Full Text

Duke Authors

Cited Authors

  • Kearfott, KJ; Han, S; McMahan, KL; Samei, E

Published Date

  • March 1995

Published In

Volume / Issue

  • 68 / 3

Start / End Page

  • 340 - 349

PubMed ID

  • 7860305

Pubmed Central ID

  • 7860305

International Standard Serial Number (ISSN)

  • 0017-9078

Digital Object Identifier (DOI)

  • 10.1097/00004032-199503000-00006

Language

  • eng

Conference Location

  • United States