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Title: Studies on the application of CVD diamonds as active detectors of ionising radiation
Authors: Marczewska, B
Nowak, T
Olko, P
Waligorski, MPR
Issue Date: 2001
Source: PHYSICA B-CONDENSED MATTER, 308. p. 1213-1216
Abstract: Due to its tissue-equivalence, radiation hardness, resistivity to chemicals and thermal stability, diamond is becoming an interesting material for developing dosimeters of ionising radiation. Several types of CVD diamonds grown at the Institute for Materials Research at the Limburg University, Belgium, were used to construct detectors working in ionisation chamber mode, applicable in medical physics. CVD diamonds with substrate removed, cut into 3 mm x 3 mm x 0,8 mm pieces and with deposited Au contacts, exposed in an external field of 320 kVp X-rays demonstrated sensitivity which varied from 50 to 630 nC/Gy, and a sublinear response with dose rate. A pencil-shaped holder was developed and used for testing the diamond detectors. The main deficiency of the system so far are extended periods required to reach signal saturation and recovery after irradiation. We expect this deficiency to be overcome by improving the quality of CVD diamonds. (C) 2001 Elsevier Science B.V. All rights reserved.
Notes: INP, Hlth Phys Lab, PL-31342 Krakow, Poland. Univ Limburg, Inst Mat Res, Diepenbeek, Belgium. Ctr Oncol, Krakow, Poland.Marczewska, B, INP, Hlth Phys Lab, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.
Keywords: CVD diamonds; detectors; ionising radiation
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ISSN: 0921-4526
e-ISSN: 1873-2135
DOI: 10.1016/S0921-4526(01)00945-0
ISI #: 000173660100304
Category: A1
Type: Journal Contribution
Validations: ecoom 2003
Appears in Collections:Research publications

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