TY - GEN
T1 - Analysis of thermoluminescent glow peaks of zoisite under beta irradiations
AU - Javier Ccallata, Henry Sixto
AU - Watanabe, Shigueo
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - deconvolution
KW - defects in solids
KW - initial rise
KW - Thermoluminescence
UR - http://www.scopus.com/inward/record.url?scp=78649916853&partnerID=8YFLogxK
U2 - 10.1063/1.3480209
DO - 10.1063/1.3480209
M3 - Contribución a la conferencia
AN - SCOPUS:78649916853
SN - 9780735408142
T3 - AIP Conference Proceedings
SP - 391
EP - 394
BT - VIII Latin American Symposium on Nuclear Physics and Applications, LASNPA
Y2 - 15 December 2009 through 19 December 2009
ER -