基于/spl α -射线响应特性的PBI/sub - 2晶体辐射探测器表征

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI:10.1109/NSSMIC.1993.701655

T. Shoji, K. Ohba, T. Suehiro, Y. Hiratate

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引用次数: 0

摘要

提出了一种改进的生产碘化铅单晶的方法。这个方法基本上是一个四步布里奇曼方法。用这种方法生长的晶体制备了块状核辐射探测器。测量了探测器的特性，特别是对能量为5.48 MeV的a粒子的响应，并与其他用普通Bridgman方法制备的探测器进行了比较。在脉冲高度谱中成功地观察到一个清晰的峰。另一方面，用普通布里奇曼法生长的材料在探测器上没有观察到峰。通过对峰值位置与外加偏置电压的测量，估计电子-空穴对产生的平均能量和空穴的pz积分别约为30 eV和lo ' cm2/V。

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Characterization Of Radiation Detector Using The PBI/sub 2/crystal By Response Properties Of /spl alpha/-rays

An improved method is proposed for the production of single crystals of lead iodide (PbIb. This method is basically a four-pass Bridgman method. Bulk-type nuclear radiation detectors have been fabricated by use of crystals grown by the present method. The characteristics of the detectors, particularly the response for a-particles with an energy of 5.48 MeV has been measured and compared with that of other detectors fabricated with materials grown by the ordinary Bridgman method. A clear peak has been successfully observed in the pulse-height spectrum. On the other hand no peak has been observed with the detector by the material grown by the ordinary Bridgman method. From the measurements of peak position versus applied bias voltage the average energy for the production of electron-hole pairs and the pz product of hole are estimated as about 30 eV and lo-' cm2/V, respectively.

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1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference

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