Charge-collection efficiency and long-term stability of single-crystal CVD diamond detector under different carrier-drift conditions
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-03-04 |
| Journal | Japanese Journal of Applied Physics |
| Authors | Yuki Sato, Hiroyuki Murakami, Takehiro Shimaoka, Masakatsu Tsubota, Junichi H. Kaneko |
| Institutions | Japan Atomic Energy Agency, RIKEN Nishina Center |
| Citations | 7 |
Abstract
Section titled āAbstractāAbstract We investigate the performance of a charged-particle detector fabricated using single-crystal diamond grown by chemical vapor deposition. The detector identified four different 241 Am Ī±-particle energies (5.389, 5.443, 5.486, and 5.545 MeV) thanks to its superior energy resolution of 0.407 Ā± 0.004% for electron drift and 0.418 Ā± 0.004% for hole drift (full width at half maximum). The charge-collection efficiency inside the diamond crystal was above 97.0% for both electrons and holes. The diamond detector also exhibited no significant degradation in terms of pulse-height spectra and energy resolution during operation for more than 100 h under electron-drift conditions. In contrast, the pulse-height spectra obtained under hole-drift conditions deteriorated because of the polarization phenomenon.