Dose rate effects on the performance of MWCVD diamond films as TL gamma radiation dosimeter

E. Cruz-Zaragoza; S. Gastélum; R. Meléndrez; V. Chernov; M. Barboza-Flores

doi:10.1002/pssa.200925361

Dose rate effects on the performance of MWCVD diamond films as TL gamma radiation dosimeter

E. Cruz-Zaragoza, S. Gastélum, R. Meléndrez, V. Chernov, M. Barboza-Flores^*

^*Corresponding author for this work

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

4 Scopus citations

Abstract

Dose rate effects on the thermoluminescence (TL) properties of undoped and 750 ppm nitrogen doped microwave chemical vapor deposition(MWCVD)diamond films were analyzed. The diamond samples were exposed to 2.4-20.67 Gy/min dose rates from a ⁶⁰Co source. The TL glow curve of undoped sample showed no apparent dose rate effects. The doped diamond film exhibited dose rate effects consisting in a 10-30% integrated TL increase as the dose rate increased. The TL response as a function of dose rates showed a nonlinear behavior for the doped sample contrary to the undoped diamond film. The dose rate effects were evaluated through the determination of the kinetics parameters by fitting of the TL glow curves. The results indicate that chemical vapor deposition (CVD) diamond may present some dose rate effects on the TL properties in a given dose range, implying that some care should be exercised in order to use CVD diamond films in radiation dose assessments.

Original language	English
Pages (from-to)	1944-1948
Number of pages	5
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	207
Issue number	8
DOIs	https://doi.org/10.1002/pssa.200925361
State	Published - Aug 2010

Keywords

Diamond films
Gamma radiation
MWCVD detectors
Thermoluminescence

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10.1002/pssa.200925361

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title = "Dose rate effects on the performance of MWCVD diamond films as TL gamma radiation dosimeter",

abstract = "Dose rate effects on the thermoluminescence (TL) properties of undoped and 750 ppm nitrogen doped microwave chemical vapor deposition(MWCVD)diamond films were analyzed. The diamond samples were exposed to 2.4-20.67 Gy/min dose rates from a 60Co source. The TL glow curve of undoped sample showed no apparent dose rate effects. The doped diamond film exhibited dose rate effects consisting in a 10-30% integrated TL increase as the dose rate increased. The TL response as a function of dose rates showed a nonlinear behavior for the doped sample contrary to the undoped diamond film. The dose rate effects were evaluated through the determination of the kinetics parameters by fitting of the TL glow curves. The results indicate that chemical vapor deposition (CVD) diamond may present some dose rate effects on the TL properties in a given dose range, implying that some care should be exercised in order to use CVD diamond films in radiation dose assessments.",

keywords = "Diamond films, Gamma radiation, MWCVD detectors, Thermoluminescence",

author = "E. Cruz-Zaragoza and S. Gast{\'e}lum and R. Mel{\'e}ndrez and V. Chernov and M. Barboza-Flores",

year = "2010",

month = aug,

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T1 - Dose rate effects on the performance of MWCVD diamond films as TL gamma radiation dosimeter

AU - Cruz-Zaragoza, E.

AU - Gastélum, S.

AU - Meléndrez, R.

AU - Chernov, V.

AU - Barboza-Flores, M.

PY - 2010/8

Y1 - 2010/8

N2 - Dose rate effects on the thermoluminescence (TL) properties of undoped and 750 ppm nitrogen doped microwave chemical vapor deposition(MWCVD)diamond films were analyzed. The diamond samples were exposed to 2.4-20.67 Gy/min dose rates from a 60Co source. The TL glow curve of undoped sample showed no apparent dose rate effects. The doped diamond film exhibited dose rate effects consisting in a 10-30% integrated TL increase as the dose rate increased. The TL response as a function of dose rates showed a nonlinear behavior for the doped sample contrary to the undoped diamond film. The dose rate effects were evaluated through the determination of the kinetics parameters by fitting of the TL glow curves. The results indicate that chemical vapor deposition (CVD) diamond may present some dose rate effects on the TL properties in a given dose range, implying that some care should be exercised in order to use CVD diamond films in radiation dose assessments.

AB - Dose rate effects on the thermoluminescence (TL) properties of undoped and 750 ppm nitrogen doped microwave chemical vapor deposition(MWCVD)diamond films were analyzed. The diamond samples were exposed to 2.4-20.67 Gy/min dose rates from a 60Co source. The TL glow curve of undoped sample showed no apparent dose rate effects. The doped diamond film exhibited dose rate effects consisting in a 10-30% integrated TL increase as the dose rate increased. The TL response as a function of dose rates showed a nonlinear behavior for the doped sample contrary to the undoped diamond film. The dose rate effects were evaluated through the determination of the kinetics parameters by fitting of the TL glow curves. The results indicate that chemical vapor deposition (CVD) diamond may present some dose rate effects on the TL properties in a given dose range, implying that some care should be exercised in order to use CVD diamond films in radiation dose assessments.

KW - Diamond films

KW - Gamma radiation

KW - MWCVD detectors

KW - Thermoluminescence

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DO - 10.1002/pssa.200925361

M3 - Artículo

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

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IS - 8

ER -

Dose rate effects on the performance of MWCVD diamond films as TL gamma radiation dosimeter

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Keywords

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