期刊
出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2016.08.020
关键词
Diamond detector; Single-crystal CVD diamond; Charge-collection efficiency; Charged-particle detection; Ion-beams
类别
资金
- JSPS KAKENHI [25800166]
- Grants-in-Aid for Scientific Research [25800166] Funding Source: KAKEN
The performance of a diamond detector created from a single-crystal diamond grown by chemical vapor deposition was studied for application in detecting charged particles having energies ranging from 100 keV to 2 MeV. Energy peaks of different low-energy ions were clearly observed. However, we observed that the pulse height for individual incident ions decreases with increasing atomic number of the ions. We estimated the charge collection efficiency of the generated charge carriers by the incident charged particles. The charge collection efficiencies are 97.0 +/- 0.7% for 2 MeV helium-ions (He+). On the other hand, compared with that of He+, silicon-ions (Si+) and gold-ions (Au3+) show low charge collection efficiency: 70.6 +/- 2.2% and 29.5 +/- 4.2% for 2 MeV-Si+ and 2 MeV-Au3+, respectively. We also found that the charge collection efficiency decreases as the generated charge density inside the diamond crystal increases. (C) 2016 Elsevier B.V. All rights reserved.
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