Uncertainty analysis of Hp(10)meas/Hp(10)del ratio for TLD-100H at energy 24-1250 keV

W. Priharti, Supian Samat, A. B A Kadir

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The Hp(10) of an ideal TLD is independent of photon energy. This is to say that at any photon energy, the ratio R of the measured dose Hp(10)meas to the delivered dose Hp(10)del is always 1. In practice however the Hp(10) is dependent on the energy and R is not equal to 1. For this reason, ICRP has set the lower limit LL and upper limit UL for R as 0.55≤R≤1.63 for detection limit of 0.1 mSv and Hp(10)del=1 mSv. As R is the quantity arises from the measurement processes, the existence of uncertainty of R, i.e. {increment}R is inevitable. In the boundary cases, such as when R is slightly lower than LL or slightly larger than UL, {increment}R would serve a useful quantity in decision making either to accept or to reject the value of R. The purpose of the present work is to estimate {increment}R for the TLD-100H for photon energy of 24-1250 keV. The estimation of {increment}R is based on the error propagation method. For the eleven photon energies, this work obtained (a) R in the range of 0.77 to 1.16, (b) {increment}R in the range of ± 0.02 to ± 0.04. The values of R were satisfactory as they complied the ICRP limit. The determined {increment}R is considered very small as it is in the order of 3% in comparison of R.

Original languageEnglish
Pages (from-to)115-118
Number of pages4
JournalJurnal Teknologi (Sciences and Engineering)
Volume62
Issue number3
Publication statusPublished - 2013

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Uncertainty analysis
Photons
Decision making

Keywords

  • Energy dependence
  • H(10) uncertainty
  • ICRP trumpet graph
  • TLD-100H

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Uncertainty analysis of Hp(10)meas/Hp(10)del ratio for TLD-100H at energy 24-1250 keV. / Priharti, W.; Samat, Supian; Kadir, A. B A.

In: Jurnal Teknologi (Sciences and Engineering), Vol. 62, No. 3, 2013, p. 115-118.

Research output: Contribution to journalArticle

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