Single-crystal CVD diamond detector for high-resolution particle spectrometry
1 The Institute of Physical and Chemical Research (RIKEN) - 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
2 Graduate School of Engineering, Hokkaido University - N13, W8, Kita- ku, Sapporo 060-8628, Japan
Received: 16 August 2014
Accepted: 4 November 2014
The performance of a single-crystal diamond detector, grown by chemical vapour deposition, as an energy spectrometer for charged particles was studied. The detector was able to identify four different energies of -particles (5.389, 5.443, 5.486, and 5.545 MeV) thanks to a superior intrinsic energy resolution of (full width at half maximum). The electrode configuration, specifically the electric field configuration inside the diamond crystal, and the electrode materials, strongly affect the energy resolution for charged particles. The charge collection efficiency inside the diamond crystal was for both electrons and holes.
PACS: 29.40.Wk – Solid-state detectors / 89.20.Bb – Industrial and technological research and development
© EPLA, 2014