TY - CHAP
T1 - Synthesis and thermoluminescent properties of new ZnO phosphors
AU - Burruel-Ibarra, S. E.
AU - Cruz-Vazquez, C.
AU - Bernal, R.
AU - Martinez-Castelo, J. R.
AU - Garcia Haro, A. R.
AU - Orante-Barron, V. R.
PY - 2013
Y1 - 2013
N2 - In this work, results on the thermoluminescence dosimetry properties of beta particle irradiated ZnO obtained by thermal annealing of chemically synthesized ZnS are reported. ZnS powder was sintered at 950 °C during 24 h in air, in order to obtain pellet-shaped ZnO samples. The thermoluminiescence (TL) intensity of ZnO previously exposed to beta radiation increased as the dose increased in the 0.025-6.4 kGy interval studied. Characteristic glow curves exhibited two emission maxima at ~ 94 and ~ 341 °C. The dosimetric peak located at ~ 341 °C shifted towards lower temperatures as the dose increased, which indicates that second-order kinetic processes are involved in the thermoluminiescence emission. The dose response of ZnO showed a linear behaviour in the 0.025 Gy-0.8 kGy dose interval, which makes this material suitable and promising for medical, industrial and also space dosimetry applications. The thermoluminescence total signal faded down 48 % 6 h after irradiation and showed an asymptotic behaviour for longer times, due mainly to the ~ 341 °C stable and dosimetric glow peak.
AB - In this work, results on the thermoluminescence dosimetry properties of beta particle irradiated ZnO obtained by thermal annealing of chemically synthesized ZnS are reported. ZnS powder was sintered at 950 °C during 24 h in air, in order to obtain pellet-shaped ZnO samples. The thermoluminiescence (TL) intensity of ZnO previously exposed to beta radiation increased as the dose increased in the 0.025-6.4 kGy interval studied. Characteristic glow curves exhibited two emission maxima at ~ 94 and ~ 341 °C. The dosimetric peak located at ~ 341 °C shifted towards lower temperatures as the dose increased, which indicates that second-order kinetic processes are involved in the thermoluminiescence emission. The dose response of ZnO showed a linear behaviour in the 0.025 Gy-0.8 kGy dose interval, which makes this material suitable and promising for medical, industrial and also space dosimetry applications. The thermoluminescence total signal faded down 48 % 6 h after irradiation and showed an asymptotic behaviour for longer times, due mainly to the ~ 341 °C stable and dosimetric glow peak.
KW - ZnO
KW - themoluminescence
KW - dosimetry
KW - ionizing radiation
KW - phosphors
UR - http://www.scopus.com/inward/record.url?scp=84878232858&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.755.139
DO - 10.4028/www.scientific.net/MSF.755.139
M3 - Capítulo
SN - 9783037856574
VL - 755
T3 - Materials Science Forum
SP - 139
EP - 144
BT - STRUCTURAL AND CHEMICAL CHARACTERIZATION OF METALS, ALLOYS AND COMPOUNDS
PB - Trans Tech Publications Ltd
T2 - 21st International Materials Research Congress, IMRC 2012
Y2 - 12 August 2012 through 17 August 2012
ER -