Title :
Investigation of basic characteristics of synthetic diamond radiation detectors
Author :
Kashiwagi, Toshisuke ; Hibino, Kinya ; Kitamura, Hisashi ; Okuno, Shoji ; Takashima, Takeshi ; Uchihori, Yukio ; Yajima, Kaori ; Yokota, Mamoru ; Yoshida, Kenji
Author_Institution :
Fac. of Eng., Kanagawa Univ., Yokohama, Japan
Abstract :
Diamonds have attractive properties for use as radiation detectors. Recent advances in diamond fabrication techniques have made it possible to produce almost perfect single crystal materials that have electrical properties suitable for radiation detectors. We developed detectors made of high-purity synthetic IIa diamond grown by the high-pressure, high-temperature method and investigated their basic properties. The leakage current is less than 20 pA with reverse bias voltages up to 2.4 kV, and the diode current is 0.1 μA with 1 V forward bias voltage. The energy resolution for the best detector is 15.4 keV (FWHM) for 5.486 MeV alpha particles from 241Am.
Keywords :
alpha-particle detection; leakage currents; semiconductor counters; semiconductor diodes; 0.1 muA; 1 V; 2.4 kV; 5.486 MeV; 241Am; alpha particles; diamond fabrication; diode current; electrical properties; energy resolution; forward bias voltage; high-pressure high-temperature method; high-purity synthetic IIa diamond; leakage current; reverse bias voltages; single crystal materials; synthetic diamond radiation detectors; Alpha particles; Atomic measurements; Crystalline materials; Leakage current; Protons; Pulse measurements; Radiation detectors; Semiconductor materials; Silicon; Voltage;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1462315
