THERMAL CALORIMETERS FOR HIGH-RESOLUTION X-RAY SPECTROSCOPY

被引：62

作者：

MCCAMMON, D ^{[1
]}

CUI, W ^{[1
]}

JUDA, M ^{[1
]}

MORGENTHALER, J ^{[1
]}

ZHANG, J ^{[1
]}

KELLEY, RL ^{[1
]}

HOLT, SS ^{[1
]}

MADEJSKI, GM ^{[1
]}

MOSELEY, SH ^{[1
]}

SZYMKOWIAK, AE ^{[1
]}

机构：

[1] NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1993年 / 326卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(93)90346-J

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Thermal detection of individual X-ray photons by small (0.5 x 0.5 mm) calorimeters has been used to achieve an energy resolution as good as 7.5 eV FWHM for 6 keV X-rays. Such detectors should have interesting applications in X-ray astronomy as well as laboratory spectroscopy, and they promise a high tolerance for embedded sources. Ideally, it should be possible to improve the resolution greatly by making smaller detectors or operating them at lower temperatures than the 50-100 mK currently used. However, there appear to be fairly fundamental limitations when semiconductor thermistors are used as the thermometer. When trying to achieve energy resolution of 0.1% or better, fluctuations in the thermalization efficiency of the detector must also be considered, and this places additional restrictions on suitable detector materials.

引用

页码：157 / 165

页数：9

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