Dose-response and intrinsic efficiency of thermoluminescent dosimeters in a 15 MV clinical photon beam in a liquid water phantom

A Bravim; R K Sakuraba; J C Cruz; L L Campos

doi:10.1016/j.apradiso.2012.01.025

Dose-response and intrinsic efficiency of thermoluminescent dosimeters in a 15 MV clinical photon beam in a liquid water phantom

Appl Radiat Isot. 2012 Jul;70(7):1360-2. doi: 10.1016/j.apradiso.2012.01.025. Epub 2012 Feb 10.

Authors

A Bravim¹, R K Sakuraba, J C Cruz, L L Campos

Affiliation

¹ Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Avenida Professor Lineu Prestes, 2242, Cidade Universitária, São Paulo, SP, Brazil.

PMID: 22342311
DOI: 10.1016/j.apradiso.2012.01.025

Abstract

This paper compares the performance of CaSO4:Dy and LiF dosimeters irradiated with a 15 MV photon beam of a clinical linear accelerator to 0.1-10 Gy in a liquid water. The dose-response curves are linear up to 5 Gy. The average TL sensitivity of CaSO4:Dy is 26 and 287 times higher than the sensitivities of LiF:Mg,Ti and microLiF:Mg,Ti, respectively. CaSO4:Dy has an intrinsic efficiency 71% and 94% higher than the intrinsic efficiencies of LiF:Mg,Ti and microLiF:Mg,Ti, respectively.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Calcium Sulfate / analysis
Dose-Response Relationship, Radiation
Limit of Detection
Phantoms, Imaging*
Photons*
Thermoluminescent Dosimetry / instrumentation*

Substances

Calcium Sulfate