Analysis of thermoluminescent glow peaks of zoisite under beta irradiations

Henry Sixto Javier Ccallata, Shigueo Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

In this study, the thermoluminescence (TL) properties of natural crystal of zoisite were investigated after beta (90Sr) irradiation at room temperature (RT). Zoisite, of chemical formula Ca2Al 3(SiO4)(Si2O7)O(OH), is found in Minas Gerais State, Brazil as natural mineral of silicate, member of the epidote group. The glow curve of a natural sample submitted to a heat treatment at 600°C is composed of two broad peaks, centered at about 110-130°C and another one at about 205-210°C. A heating rate of 4°Cs-1 was used in the temperature range from RT to 300°C. The additive dose, T m-TSTOP thermal cleaning, initial rise, variable heating rate and computerized glow curve deconvolution methods have shown that the glow curve is a superposition of six peaks at 100, 130, 155, 175, 200 and 230°C. The trapping parameters for the individual peaks have been calculated. The TL dose response of 130 and 200°C peaks has a linear response. Zoisite is a candidate for a TL dosimeter because of its high sensitivity.

Original languageEnglish
Title of host publicationVIII Latin American Symposium on Nuclear Physics and Applications, LASNPA
Pages391-394
Number of pages4
DOIs
StatePublished - 2010
Externally publishedYes
Event8th Latin American Symposium on Nuclear Physics and Applications, LASNPA - Santiago, Chile
Duration: 15 Dec 200919 Dec 2009

Publication series

NameAIP Conference Proceedings
Volume1265
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference8th Latin American Symposium on Nuclear Physics and Applications, LASNPA
Country/TerritoryChile
CitySantiago
Period15/12/0919/12/09

Keywords

  • deconvolution
  • defects in solids
  • initial rise
  • Thermoluminescence

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