Synthetic single crystal diamond diodes for radiotherapy dosimetry

被引：40

作者：

Almaviva, S. ^{[1
]}

Marinelli, Marco ^{[1
]}

Milani, E. ^{[1
]}

Tucciarone, A. ^{[1
]}

Verona-Rinati, G. ^{[1
]}

Consorti, R. ^{[2
]}

Petrucci, A. ^{[2
]}

De Notaristefani, F. ^{[3
]}

Ciancaglioni, I.

机构：

[1] Univ Roma Tor Vergata, Ist Nazl Fis Nucl, Dipartimento Ingn Meccan, I-00133 Rome, Italy

[2] Osped San Filippo Neri, UO Fis Sanit, I-00135 Rome, Italy

[3] Univ Roma 3, Ist Nazl Fis Nucl, Dipartimento Ingn Elettron, I-00146 Rome, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2008年 / 594卷 / 02期

关键词：

single crystal diamond; radiotherapy dosimeter;

D O I：

10.1016/j.nima.2008.06.028

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Synthetic single crystal diamonds in a p-type/intrinsic/metal structure were tested as dosimeters for radiotherapy. The devices have been analyzed by using 6 and 10MV Bremsstrahlung X-ray beams and electron beams from 6 MeV up to 18 MeV from a CLINAC DHX Varian accelerator. All measurements have been performed in a water phantom and ionization chambers were used for calibration and comparison. The dosimeters were operated in photovoltaic regime with no external bias voltage applied. A few Gy pre-irradiation was performed in order to stabilize the device output, resulting in fluctuations sensitivity below +/-0.5%. No dose rate dependence of the detector response was observed. Very good reproducibility and linearity were obtained as well. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：273 / 277

页数：5

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