MERCURIC IODIDE DETECTOR SYSTEMS FOR IDENTIFYING SUBSTANCES BY X-RAY-ENERGY DISPERSIVE DIFFRACTION

被引：8

作者：

IWANCZYK, JS ^{[1
]}

PATT, BE ^{[1
]}

WANG, YJ ^{[1
]}

CROFT, M ^{[1
]}

KALMAN, Z ^{[1
]}

MAYO, W ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,PISCATAWAY,NJ 08855

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1995年 / 42卷 / 04期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1109/23.467905

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The use of mercuric iodide arrays for energy-dispersive x-ray diffraction (EDXRD) spectroscopy is now being investigated by us for inspection of specific crystalline powders in substances ranging from explosives to illicit drugs. Mercuric iodide has been identified as the leading candidate for replacing the Ge detectors previously employed in the development of this technique because HgI2 detectors: operate at or near room temperature; without the bulky apparatus associated with cryogenic cooling; and offer excellent spectroscopy performance with extremely high efficiency. Furthermore, they provide the practicality of constructing optimal array geometries necessary for these measurements. Proof of principle experiments have been performed using a single-HgI2 detector spectrometer, An energy resolution of 655 eV (FWHM) has been obtained for 60 keV gamma line from an (241) Am source. The EDXRD signatures of various crystalline powdered compounds have been measured and the spectra obtained show the excellent potential of mercuric iodide for this application.

引用

页码：606 / 610

页数：5

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