HYPERCRYOGENIC DETECTOR-FET UNIT - CORE OF HIGH-RESOLUTION SPECTROMETER

被引：8

作者：

ELAD, E

NAKAMURA, M

机构：

[1] Lawrence Radiation Laboratory University of California, Berkeley, California

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1968年 / NS15卷 / 03期

关键词：

D O I：

10.1109/TNS.1968.4324972

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：

A hypercryogenic high-resolution x-ray and y-ray spectrometer is described. The spectrometer consists of a lithium-drifted germanium detector and a germanium-junction field-effect transistor (JFET) preamplifier. The detector is operated at its optimum temperature, which is in the range of 10-30° K. The JFET's are operated at liquid helium temperature. This results in 0.28 keV FWHM preamplifier resolution with a slope of 0.018 keV/pF. Resolutions of the order of 0.4 keV are obtained with low capacitance detectorg 3 for low-energy x rays. The ϒrays of57Co are measured with 0.68 keV FWHM. The described spectrometer was used to study some aspects of the trapping effects in germanium detectors. Copyright © 1968 by The Institute of Electrical and Electronics Engineers, Inc.

引用

页码：477 / +

页数：1

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