Suitability of synthetic diamond films for x-ray dosimetry applications

Author

Lansley, S P ; Betzel, G.T. ; Baluti, F. ; Lydon, J. ; Reinisch, L.

Author_Institution

Dept. of Phys. & Astron., Univ. of Canterbury, Christchurch

fYear

2008

fDate

July 28 2008-Aug. 1 2008

Firstpage

34

Lastpage

37

Abstract

Simple sandwich-type device structures have been fabricated by deposition of metal contacts on opposing faces of polycrystalline diamond films synthesised using chemical vapour deposition. The electrical characteristics of these devices have been investigated during exposure to a 6 megavolt photon beam from a clinical linear accelerator. The photocurrent appears to vary as the dose rate to the power of 0.78-0.85. The angular dependence of the photocurrent is less than 10 per cent. Further study on a range of CVD diamond substrates from different manufacturers is on-going.

Keywords

X-ray applications; chemical vapour deposition; diamond; dosimetry; radiation therapy; X-ray dosimetry; chemical vapour deposition; metal contacts; polycrystalline diamond films; sandwich-type device structures; synthetic diamond films; Chemical vapor deposition; Contacts; Current measurement; Dosimetry; Hospitals; Instruments; Linear accelerators; Manufacturing; Oncology; Particle beams; chemical vapour deposition; diamond; dosimetry; linear accelerator (linac); x-ray;

fLanguage

English

Publisher

ieee

Conference_Titel

Optoelectronic and Microelectronic Materials and Devices, 2008. COMMAD 2008. Conference on

Conference_Location

Sydney, SA

ISSN

1097-2137

Print_ISBN

978-1-4244-2716-1

Electronic_ISBN

1097-2137

Type

conf

DOI

10.1109/COMMAD.2008.4802086

Filename

4802086