SBIR Phase I: High Temperature High Resolution Cesium-Antimony Semiconductor Gamma Spectroscopy Detectors for Borehole Radiochemical

SBIR 第一阶段：用于钻孔放射化学的高温高分辨率铯锑半导体伽马能谱探测器

• 批准号: 0320239
• 负责人: Charles Beetz
• 金额: $ 10万
• 依托单位: NANOSCIENCES CORP
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0320239&HistoricalAwards=false
• 关键词: SBIR; Phase; Temperature; Resolution; Cesium

This Small Business Innovation Research Phase I Project aims to construct a novel elevated temperature gamma ray spectroscopy detector for borehole nuclear geochemistry. Cesium-Antimony (Cs3Sb) is a semiconductor widely used commercially for thin film vacuum photocathodes. In single crystal form, it has many properties superior to Ge for gamma radiation detection: (1) a lower electron-hole pair energy (2 eV vs 3 eV) for better intrinsic energy resolution; (2) a higher bandgap (1.6 vs 0.7 eV) for low thermal noise, even lower than CdTe and operation at room or elevated temperatures; and (3) a higher Z (55 & 51, vs 32) for a stopping power 4-5 times greater ~ MeV gamma rays. In Phase I, the aim is to grow sufficiently large crystals of Cs3Sb, and fabricate them into environmentally (oxygen, water vapor) protected room temperature radiation detectors, to demonstrate that they may become the future of gamma ray detectors. These detectors could replace NaI(Tl) and other scintillator detectors, and SiLi and HPGe gamma ray spectroscopy detectors in industrial and medical analytical instrumentation.This development will enable new scientific instrumentation used in research and education in chemistry, physics, planetary science, astrophysics, biology, medicine and other places where x- and gamma- rays are used. The results will be widely disseminated and published.

这个小型企业创新研究阶段I项目旨在为钻孔核地球化学构建一种新型的升高温度伽马光谱探测器。 纤维抗次仪（CS3SB）是一种在薄膜真空光（薄膜真空光）上广泛使用的半导体。在单晶形式中，它具有许多高于GE的特性，用于γ辐射检测：（1）较低的电子孔对能（2 eV vs 3 eV），以更好地固有能量分辨率； （2）低热噪声的带隙（1.6 vs 0.7 eV），甚至低于CDTE，在房间或温度升高时操作； （3）较高的Z（55和51，vs 32），停止功率大4-5倍〜MEV伽玛射线。 在第一阶段，目的是种植足够大的CS3SB晶体，并将其捏成环境（氧气，水蒸气）受保护的室温辐射探测器，以证明它们可能成为Gamma Ray探测器的未来。这些探测器可以替代NAI（TL）和其他闪烁仪检测器，以及在工业和医学分析仪器中的Sili和Hpge Gamma射线光谱检测器。该开发将启用用于化学，物理学，物理学，行星科学，天体，生物学，生物学，生物学，生物学，生物学，生物学，生物学，生物学，和其他地方的新科学仪器。结果将被广泛传播和发布。