Title :
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
fDate :
July 28 2008-Aug. 1 2008
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;
Conference_Titel :
Optoelectronic and Microelectronic Materials and Devices, 2008. COMMAD 2008. Conference on
Conference_Location :
Sydney, SA
Print_ISBN :
978-1-4244-2716-1
Electronic_ISBN :
1097-2137
DOI :
10.1109/COMMAD.2008.4802086
