【摘要】 通过分析CdZnTe半导体射线探测器性能,并考虑到电荷灵敏放大器噪声特性,本文设计了用于便携式探测器中的低噪声、小尺寸电荷灵敏放大器。常温下3mm×7mm×3mm的CdZnTe探测器与小尺寸电荷灵敏前置放大器探测系统对于59．5 keV的241 Amγ源,其能量分辨率可达4．38％。更多还原

【Abstract】 A new low noise charge-sensitive micro-preamplifier used in portable detecting instrument was designed through analyzing the performances of CdZnTe semiconductor detector and considering the noise characteristics of charge-sensitive amplifier. At room temperature, the energy resolution of the detecting system with 3 mm×7 mm×3 mm CdZnTe detector and charge-sensitive micro-preamplifier is 4. 38% for 59. 5 keV 241 Amγsource.更多还原