- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
CMOS-coupled NaI scintillation detector for gamma decay measurements
摘要： 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.
关键词： gamma-ray scintillation detector,dead-time correction,photomultiplier tube,NaI(Tl) crystal,CMOS camera
更新于2025-09-23 15:19:57
-
A multi-beam X-ray imaging detector using a branched optical fiber bundle
摘要： We developed a multi-beam X-ray imaging detector, consisting of four scintillator screens connected by a branched optical fiber bundle with a CMOS camera. By using the detector and a multi-beam imaging optics with silicon single crystalline blades designed for a white synchrotron radiation source, we successfully demonstrated multi-beam X-ray imaging with an exposure time of 1 ms. The long and flexible optical fiber bundle used for the detector enables us to realize high-speed multi-beam X-ray imaging with high flexibility at a relatively low cost.
关键词： synchrotron radiation,scintillator screens,optical fiber bundle,multi-beam X-ray imaging,CMOS camera
更新于2025-09-16 10:30:52