ADVANCES IN THE DEVELOPMENT OF ENCAPSULANTS FOR MERCURIC IODIDE X-RAY-DETECTORS

被引：12

作者：

IWANCZYK, JS ^{[1
]}

WANG, YJ ^{[1
]}

BRADLEY, JG ^{[1
]}

ALBEE, AL ^{[1
]}

SCHNEPPLE, WF ^{[1
]}

机构：

[1] CALTECH,JET PROP LAB,PASADENA,CA 91125

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1990年 / 37卷 / 06期

基金：

美国国家航空航天局; 美国国家卫生研究院;

关键词：

D O I：

10.1109/23.101259

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：

Advances in the development of protective impermeable encapsulants with high transparency to ultra-low-energy X-rays for use on HgI2 X-ray detectors are reported. Various X-ray fluorescence spectra from coated detectors are presented. The X-ray absorption in the encapsulants has been analyzed using characteristic radiation from various elements. Results suggest that low-energy cutoffs for the detectors are not determined solely by the encapsulating coatings presently employed but are also influenced by the front electrode and surface effects, which can affect the local electric field or the surface recombination velocity. An energy resolution of 182 eV (FWHM) has been achieved for Ni L lines at 850 eV. Improved detector sensitivity to X-ray energies under 700 eV is demonstrated. © 1990 IEEE

引用

页码：2214 / 2218

页数：5

共 8 条

[1]

Bertin E. P., 1975, PRINCIPLES PRACTICE, P113

[2] PRACTICAL APPLICATION OF HGI2 DETECTORS TO A SPACE-FLIGHT SCANNING ELECTRON-MICROSCOPE [J].