核技术
覈技術
핵기술
NUCLEAR TECHNIQUES
2009年
10期
790-794
,共5页
郝魁红%李炎钧%赵林%王化祥%丁洪林
郝魁紅%李炎鈞%趙林%王化祥%丁洪林
학괴홍%리염균%조림%왕화상%정홍림
背散射%甄别级CdZnTe探测器%核电子学电路%能量分辨率
揹散射%甄彆級CdZnTe探測器%覈電子學電路%能量分辨率
배산사%견별급CdZnTe탐측기%핵전자학전로%능량분변솔
Backscatter%Discriminator grade CdZnTe detector%Nuclear electronic circuit%Energy resolution
为设计适用于康普顿背散射成像系统,通过分析成像系统及CdZnTe探测器性能,并考虑到相应核电子学电路的噪声特性,设计了甄别级CdZnTe探测器,并设计了相应的低噪声电荷灵敏前置放大器和主放大器.在常温下,5mm×5mm×5mm的甄别级CdZnTe探测器与核电子学电路系统对于662 keV的~(137)Cs源,其能量分辨率小于4%.
為設計適用于康普頓揹散射成像繫統,通過分析成像繫統及CdZnTe探測器性能,併攷慮到相應覈電子學電路的譟聲特性,設計瞭甄彆級CdZnTe探測器,併設計瞭相應的低譟聲電荷靈敏前置放大器和主放大器.在常溫下,5mm×5mm×5mm的甄彆級CdZnTe探測器與覈電子學電路繫統對于662 keV的~(137)Cs源,其能量分辨率小于4%.
위설계괄용우강보돈배산사성상계통,통과분석성상계통급CdZnTe탐측기성능,병고필도상응핵전자학전로적조성특성,설계료견별급CdZnTe탐측기,병설계료상응적저조성전하령민전치방대기화주방대기.재상온하,5mm×5mm×5mm적견별급CdZnTe탐측기여핵전자학전로계통대우662 keV적~(137)Cs원,기능량분변솔소우4%.
Detectors applied in Compton backscatter imaging and low-noise amplifier including charge-sensitive amplifier and main amplifier were developed,through analyzing the performances of CdZnTe detector and considering the noise characteristics of the circuits. At room temperature,energy resolution of the detection system with a 5 mm×5 mm×5 mm discriminator grade CdZnTe detector and nuclear electronic circuit is better than 4% to the 662 keV ~(137)Cs γ-ray.
