Fast scintillation detectors for high-energy X-ray region
Fast scintillation detectors for high-energy X-ray region
复制标题
高能 X 射线区域快速闪烁探测器
DOI：
10.1007/s10751-011-0543-x
复制
发表时间：
2012
影响因子：
--
通讯作者：
Masanori Koshimizu
中科院分区：
文献类型：
--
作者：
Shunji Kishimoto;Fumihiko Nishikido;Rie Haruki;Kengo Shibuya;Masanori Koshimizu
我们研制了用于同步辐射核共振散射实验的快闪烁探测器，其核激发能级在30 keV以上。使用苯乙胺溴化铅（PhE-PbBr 4）的有机-无机钙钛矿闪烁体的快速X射线探测器具有具有9.9 ns的快速衰减时间的主导光发射。采用厚度为0.9 mm的PhE-PbBr 4晶体（尺寸为108 × 7 mm 2），用X射线探测器探测~（61）Ni的核共振散射（第一激发能级：67.41 keV;半衰期：5.3 ns）。我们成功地记录了~（61）Ni衰变γ射线，探测效率为24%。已知铅掺杂的塑料闪烁体（NE 142，Pb掺杂5wt%）具有1.7ns的更快的衰减时间。在对单个NE 142探测器进行测试的基础上，研制了四通道NE 142探测器，并成功地应用于61 Ni同步辐射穆斯堡尔谱实验。
We have developed fast scintillation detectors for nuclear resonant scattering experiments using synchrotron radiation and a nuclear excited level existing in >30 keV. A fast x-ray detector using an organic-inorganic perovskite scintillator of phenethylamine lead bromide (PhE-PbBr4) had a dominant light emission with a fast decay time of 9.9 ns. An x-ray detector equipped with a 0.9-mm-thick PhE-PbBr4crystal (size: ∼8 × 7 mm2) was used to detect nuclear resonant scattering in61Ni (the first excited level: 67.41 keV; half-life: 5.3 ns). We could successfully record the decaying gamma rays emitted from61Ni with a relatively high detection efficiency of 24%. A lead-doped plastic scintillator (NE142, Pb ∼5 wt% doped) had been known to have a faster decay time of 1.7 ns. Following a test of a single NE142 detector, a four-channel NE142 detector was fabricated and successfully applied to the synchrotron-radiation based Mössbauer spectroscopy experiment on61Ni.