12-15 July 2011
Saint George Hotel
Africa/Johannesburg timezone

A synthetic diamond probe for both low-energy mammography X-rays and high-energy electron therapy beams

15 Jul 2011, 11:00


Oral Presentation Track F - Applied and Industrial Physics Applied


Mr Nicholas Ade (None)


Although diamond has been studied for dosimetry principally due to its near tissue-equivalence, its use in both low-energy X-rays and high-energy electron beams has not been reported. This report is based on dosimetric studies of a synthetic diamond probe when subjected to diagnostic mammography X-ray photons and megavoltage electron therapy beams. The probe, constructed using entirely tissue-equivalent Perspex body was configured for radiation dose measurement in either ‘edge-on’ or ‘flat-on’ exposure geometry without having first, to re-orientate the diamond within the body of the detector, and it was designed to be compatible with commercial electrometer systems. The radiation response of the diamond tested showed negligible energy dependence; its minimal background signal, high sensitivity (547.52 nC Gy-1mm-3) and suitability for measurements in small radiation fields of steep dose gradients due to its small size make it suitable for clinical dosimetry. The presented probe has the potential advantage of replacing conventional radiation dosimeters.

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)? No
Level (Hons, MSc, <br> &nbsp; PhD, other)? PhD
Consider for a student <br> &nbsp; award (Yes / No)? Yes

Primary author

Mr Nicholas Ade (None)


Prof. Tom Nam (Member, DST/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand)

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