Thermoluminescence in CVD diamond films: Application to actinometric dosimetry

M. Barboza-Flores; R. Melendrez; V. Chernov; B. Cataneda; M. Pedroza-Montero; B. Gan; J. Ahn; O. Zhang; S. F. Yoon

doi:10.1093/oxfordjournals.rpd.a005909

Thermoluminescence in CVD diamond films: Application to actinometric dosimetry

M. Barboza-Flores^*, R. Melendrez, V. Chernov, B. Cataneda, M. Pedroza-Montero, B. Gan, J. Ahn, O. Zhang, S. F. Yoon

^*Corresponding author for this work

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

4 Scopus citations

Abstract

Diamond is considered a tissue-equivalent material since its atomic number (Z =6) is close to the effective atomic number of biological tissue (Z =7.42). Such a situation makes it suitable for radiation detection purposes in medical applications. In the present work the analysis is reported of the thermoluminescence (TL) and dosimetric features of chemically vapour deposited (CVD) diamond film samples subjected to ultraviolet (UV) irradiation in the actinometric region. The TL glow curve shows peaks at 120, 220, 320 and 370°C. The 120 and 370°C peaks are too weak and the first one fades away in a few seconds after exposure. The overall room temperature fading shows a 50% TL decay 30 min after exposure. The 320°C glow peak is considered to be the most adequate for dosimetric applications due to its low fading and linear TL behaviour as a function of UV dose in the 180-260 nm range. The TL excitation spectrum presents a broad band with at least two overlapped components around 205 and 220 nm. The results indicate that the TL behaviour of CVD diamond film can be a good alternative to the currently available dosemeter and detector in the actinometric region as well as in clinical and medical applications.

Original language	English
Pages (from-to)	443-446
Number of pages	4
Journal	Radiation Protection Dosimetry
Volume	100
Issue number	1-4
DOIs	https://doi.org/10.1093/oxfordjournals.rpd.a005909
State	Published - 2002

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title = "Thermoluminescence in CVD diamond films: Application to actinometric dosimetry",

abstract = "Diamond is considered a tissue-equivalent material since its atomic number (Z =6) is close to the effective atomic number of biological tissue (Z =7.42). Such a situation makes it suitable for radiation detection purposes in medical applications. In the present work the analysis is reported of the thermoluminescence (TL) and dosimetric features of chemically vapour deposited (CVD) diamond film samples subjected to ultraviolet (UV) irradiation in the actinometric region. The TL glow curve shows peaks at 120, 220, 320 and 370°C. The 120 and 370°C peaks are too weak and the first one fades away in a few seconds after exposure. The overall room temperature fading shows a 50% TL decay 30 min after exposure. The 320°C glow peak is considered to be the most adequate for dosimetric applications due to its low fading and linear TL behaviour as a function of UV dose in the 180-260 nm range. The TL excitation spectrum presents a broad band with at least two overlapped components around 205 and 220 nm. The results indicate that the TL behaviour of CVD diamond film can be a good alternative to the currently available dosemeter and detector in the actinometric region as well as in clinical and medical applications.",

author = "M. Barboza-Flores and R. Melendrez and V. Chernov and B. Cataneda and M. Pedroza-Montero and B. Gan and J. Ahn and O. Zhang and Yoon, {S. F.}",

year = "2002",

doi = "10.1093/oxfordjournals.rpd.a005909",

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volume = "100",

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TY - JOUR

T1 - Thermoluminescence in CVD diamond films

T2 - Application to actinometric dosimetry

AU - Barboza-Flores, M.

AU - Melendrez, R.

AU - Chernov, V.

AU - Cataneda, B.

AU - Pedroza-Montero, M.

AU - Gan, B.

AU - Ahn, J.

AU - Zhang, O.

AU - Yoon, S. F.

PY - 2002

Y1 - 2002

N2 - Diamond is considered a tissue-equivalent material since its atomic number (Z =6) is close to the effective atomic number of biological tissue (Z =7.42). Such a situation makes it suitable for radiation detection purposes in medical applications. In the present work the analysis is reported of the thermoluminescence (TL) and dosimetric features of chemically vapour deposited (CVD) diamond film samples subjected to ultraviolet (UV) irradiation in the actinometric region. The TL glow curve shows peaks at 120, 220, 320 and 370°C. The 120 and 370°C peaks are too weak and the first one fades away in a few seconds after exposure. The overall room temperature fading shows a 50% TL decay 30 min after exposure. The 320°C glow peak is considered to be the most adequate for dosimetric applications due to its low fading and linear TL behaviour as a function of UV dose in the 180-260 nm range. The TL excitation spectrum presents a broad band with at least two overlapped components around 205 and 220 nm. The results indicate that the TL behaviour of CVD diamond film can be a good alternative to the currently available dosemeter and detector in the actinometric region as well as in clinical and medical applications.

AB - Diamond is considered a tissue-equivalent material since its atomic number (Z =6) is close to the effective atomic number of biological tissue (Z =7.42). Such a situation makes it suitable for radiation detection purposes in medical applications. In the present work the analysis is reported of the thermoluminescence (TL) and dosimetric features of chemically vapour deposited (CVD) diamond film samples subjected to ultraviolet (UV) irradiation in the actinometric region. The TL glow curve shows peaks at 120, 220, 320 and 370°C. The 120 and 370°C peaks are too weak and the first one fades away in a few seconds after exposure. The overall room temperature fading shows a 50% TL decay 30 min after exposure. The 320°C glow peak is considered to be the most adequate for dosimetric applications due to its low fading and linear TL behaviour as a function of UV dose in the 180-260 nm range. The TL excitation spectrum presents a broad band with at least two overlapped components around 205 and 220 nm. The results indicate that the TL behaviour of CVD diamond film can be a good alternative to the currently available dosemeter and detector in the actinometric region as well as in clinical and medical applications.

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U2 - 10.1093/oxfordjournals.rpd.a005909

DO - 10.1093/oxfordjournals.rpd.a005909

M3 - Artículo

SN - 0144-8420

VL - 100

SP - 443

EP - 446

JO - Radiation Protection Dosimetry

JF - Radiation Protection Dosimetry

IS - 1-4

ER -

Thermoluminescence in CVD diamond films: Application to actinometric dosimetry

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