当前位置: X-MOL 学术Rev. Sci. Instrum. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
CMOS-coupled NaI scintillation detector for gamma decay measurements
Review of Scientific Instruments ( IF 1.6 ) Pub Date : 2020-03-01 , DOI: 10.1063/1.5138208
Scott D. Bergeson 1 , Michael J. Ware 1 , Jeremy Hawk 2
Affiliation  

We report an all-solid-state gamma-ray scintillation detector comprised of a NaI(Tl) crystal and a scientific-grade CMOS camera. After calibration, this detector exhibits excellent linearity over more than three decades of activity levels ranging from 10 mCi to 400 nCi. Because the detector is not counting pulses, dead-time correction is not required. Compared to systems that use a photomultiplier tube, this detector has similar sensitivity and noise characteristics on short time scales. On longer time scales, we measure drifts of a few percent over several days, which can be accommodated through regular calibration. Using this detector, we observe that when high activity sources are brought into close proximity to the NaI crystal, several minutes are required for the measured signal to achieve a steady state.

中文翻译:

用于伽马衰变测量的 CMOS 耦合 NaI 闪烁探测器

我们报告了由 NaI(Tl) 晶体和科学级 CMOS 相机组成的全固态伽马射线闪烁探测器。校准后,该检测器在 10 mCi 到 400 nCi 范围内的超过三个十年的活动水平上表现出出色的线性。因为检测器不计算脉冲,所以不需要死区时间校正。与使用光电倍增管的系统相比,该检测器在短时间内具有相似的灵敏度和噪声特性。在更长的时间尺度上,我们在几天内测量了几个百分点的漂移,这可以通过定期校准来适应。使用该检测器,我们观察到当高活性源靠近 NaI 晶体时,测量信号需要几分钟才能达到稳定状态。
更新日期:2020-03-01
down
wechat
bug