TY - JOUR
T1 - Thermal annealing effects on the TL response of beta-irradiated HPHT Ib type synthetic diamond
AU - Preciado-Flores, S.
AU - Meléndrez, R.
AU - Chernov, V.
AU - Soto-Puebla, D.
AU - Pedroza-Montero, M.
AU - Barboza-Flores, M.
PY - 2007/9
Y1 - 2007/9
N2 - It is known that room temperature beta-irradiated Ib type diamond generates a non-reproducible TL glow curve shape, due to mobility of the impurity-vacancy (I-V) and interstitials (I) defects in the 30-800 °C temperature range. This situation may hinder the use of this type of diamond material in dose assessment applications. The recurring heating of the Ib type diamond sample changes the defects concentration and consequently the intensity of the TL glow peaks associated to the characteristic temperature annealing stages. In the present work we have performed thermal annealing (TA) treatment on an Ib type diamond in the 100-800 °C range previous to beta irradiation. It was observed that after the 800 °C annealing treatment the TL glow curve showed 3-5% reproducibility, in contrast to the non-reproducible TL observed in non-annealed diamond, and remained the same after two months of successive TL read outs. Moreover, the 800 °C annealing treatment assured a linear integrated TL dose behavior, a significant improvement over non-annealed samples that could facilitate the employment of Ib type synthetic diamond in dosimetric applications.
AB - It is known that room temperature beta-irradiated Ib type diamond generates a non-reproducible TL glow curve shape, due to mobility of the impurity-vacancy (I-V) and interstitials (I) defects in the 30-800 °C temperature range. This situation may hinder the use of this type of diamond material in dose assessment applications. The recurring heating of the Ib type diamond sample changes the defects concentration and consequently the intensity of the TL glow peaks associated to the characteristic temperature annealing stages. In the present work we have performed thermal annealing (TA) treatment on an Ib type diamond in the 100-800 °C range previous to beta irradiation. It was observed that after the 800 °C annealing treatment the TL glow curve showed 3-5% reproducibility, in contrast to the non-reproducible TL observed in non-annealed diamond, and remained the same after two months of successive TL read outs. Moreover, the 800 °C annealing treatment assured a linear integrated TL dose behavior, a significant improvement over non-annealed samples that could facilitate the employment of Ib type synthetic diamond in dosimetric applications.
UR - http://www.scopus.com/inward/record.url?scp=34548782764&partnerID=8YFLogxK
U2 - 10.1002/pssa.200776318
DO - 10.1002/pssa.200776318
M3 - Artículo
AN - SCOPUS:34548782764
SN - 1862-6300
VL - 204
SP - 3041
EP - 3046
JO - Physica Status Solidi (A) Applications and Materials Science
JF - Physica Status Solidi (A) Applications and Materials Science
IS - 9
ER -