Dose rate effects on the thermoluminescence kinetics properties of MWCVD diamond films

S. Gastélum; E. Cruz-Zaragoza; A. Favalli; V. Chernov; R. Meléndrez; D. Soto-Puebla; M. Pedroza-Montero; M. Barboza-Flores

doi:10.1002/pssa.200776315

Dose rate effects on the thermoluminescence kinetics properties of MWCVD diamond films

S. Gastélum, E. Cruz-Zaragoza, A. Favalli, V. Chernov, R. Meléndrez, D. Soto-Puebla, M. Pedroza-Montero^*, M. Barboza-Flores

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Dose rate effects are important in thermoluminescent (TL) dosimeter applications because a certain absorbed dose given at different dose rates may result in a different TL yield. The present work reports about the dose rate effects on TL glow curves and kinetics properties of microwave plasma assisted chemical vapor deposition (MWCVD) diamond films grown on (100) silicon. The diamond films were exposed to γradiation at 20.67, 43.4 and 81.11 Gy min^-1 dose rates in the range of 0.05-1OkGy. The films showed a linear dose behavior up to 2 kGy and reached saturation for higher doses. The TL intensity varied as a function of dose rate and the samples had a maximum TL response for relatively lower dose rates. A single first order kinetics TL peak was typical for low doses while at higher doses two first order kinetics peaks were necessary to fit the glow curves. The results indicate that dose rate effects may be significant in dosimetric applications of MWCVD diamond.

Original language	English
Pages (from-to)	3053-3058
Number of pages	6
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	204
Issue number	9
DOIs	https://doi.org/10.1002/pssa.200776315
State	Published - Sep 2007

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title = "Dose rate effects on the thermoluminescence kinetics properties of MWCVD diamond films",

abstract = "Dose rate effects are important in thermoluminescent (TL) dosimeter applications because a certain absorbed dose given at different dose rates may result in a different TL yield. The present work reports about the dose rate effects on TL glow curves and kinetics properties of microwave plasma assisted chemical vapor deposition (MWCVD) diamond films grown on (100) silicon. The diamond films were exposed to γradiation at 20.67, 43.4 and 81.11 Gy min-1 dose rates in the range of 0.05-1OkGy. The films showed a linear dose behavior up to 2 kGy and reached saturation for higher doses. The TL intensity varied as a function of dose rate and the samples had a maximum TL response for relatively lower dose rates. A single first order kinetics TL peak was typical for low doses while at higher doses two first order kinetics peaks were necessary to fit the glow curves. The results indicate that dose rate effects may be significant in dosimetric applications of MWCVD diamond.",

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T1 - Dose rate effects on the thermoluminescence kinetics properties of MWCVD diamond films

AU - Gastélum, S.

AU - Cruz-Zaragoza, E.

AU - Favalli, A.

AU - Chernov, V.

AU - Meléndrez, R.

AU - Soto-Puebla, D.

AU - Pedroza-Montero, M.

AU - Barboza-Flores, M.

PY - 2007/9

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N2 - Dose rate effects are important in thermoluminescent (TL) dosimeter applications because a certain absorbed dose given at different dose rates may result in a different TL yield. The present work reports about the dose rate effects on TL glow curves and kinetics properties of microwave plasma assisted chemical vapor deposition (MWCVD) diamond films grown on (100) silicon. The diamond films were exposed to γradiation at 20.67, 43.4 and 81.11 Gy min-1 dose rates in the range of 0.05-1OkGy. The films showed a linear dose behavior up to 2 kGy and reached saturation for higher doses. The TL intensity varied as a function of dose rate and the samples had a maximum TL response for relatively lower dose rates. A single first order kinetics TL peak was typical for low doses while at higher doses two first order kinetics peaks were necessary to fit the glow curves. The results indicate that dose rate effects may be significant in dosimetric applications of MWCVD diamond.

AB - Dose rate effects are important in thermoluminescent (TL) dosimeter applications because a certain absorbed dose given at different dose rates may result in a different TL yield. The present work reports about the dose rate effects on TL glow curves and kinetics properties of microwave plasma assisted chemical vapor deposition (MWCVD) diamond films grown on (100) silicon. The diamond films were exposed to γradiation at 20.67, 43.4 and 81.11 Gy min-1 dose rates in the range of 0.05-1OkGy. The films showed a linear dose behavior up to 2 kGy and reached saturation for higher doses. The TL intensity varied as a function of dose rate and the samples had a maximum TL response for relatively lower dose rates. A single first order kinetics TL peak was typical for low doses while at higher doses two first order kinetics peaks were necessary to fit the glow curves. The results indicate that dose rate effects may be significant in dosimetric applications of MWCVD diamond.

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JO - Physica Status Solidi (A) Applications and Materials Science

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IS - 9

ER -

Dose rate effects on the thermoluminescence kinetics properties of MWCVD diamond films

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