Investigation of basic characteristics of synthetic diamond radiation detectors
Investigation of basic characteristics of synthetic diamond radiation detectors
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DOI：
10.1109/tns.2006.871505
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发表时间：
2004-12
影响因子：
1.8
通讯作者：
T. Kashiwagi;K. Hibino;Hisashi Kitamura;K. Mori;S. Okuno;Takeshi Takashima;Y. Uchihori;Kaori Yajima;Kaori Yajima;Mamoru Yokota;K. Yoshida
中科院分区：
文献类型：
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作者：
T. Kashiwagi;K. Hibino;Hisashi Kitamura;K. Mori;S. Okuno;Takeshi Takashima;Y. Uchihori;Kaori Yajima;Kaori Yajima;Mamoru Yokota;K. Yoshida
金刚石具有用作辐射探测器的诱人特性。金刚石制造技术的最新进展使制造几乎完美的单晶材料成为可能，这些材料具有适合于辐射探测器的电学特性。因此，我们开发了由高压、高温方法生长的高纯度合成IIa钻石制成的探测器，并研究了它们的基本性质。这些检测器具有肖特基和欧姆电极，泄漏电流小于20pa，反向偏置电压高达2.4 kV，表明检测器可以承受高偏置电压。电学性能测试结果表明，电极工作良好。最佳探测器对来自/sup 241/Am的5.486 MeV α粒子的能量分辨率达到15.4 keV （FWHM）。
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 therefore developed detectors made of high-purity synthetic IIa diamonds grown by a high-pressure, high-temperature method and investigated their basic properties. These detectors have Schottky and Ohmic electrodes, and the leakage current is less than 20 pA with reverse bias voltages up to 2.4 kV, demonstrating that the detector withstands high bias voltage. The results of testing the electrical properties show that the electrodes work well. The best detector achieved an energy resolution of 15.4 keV (FWHM) for 5.486 MeV alpha particles from /sup 241/Am.