Cryogenic high-resolution X-ray spectrometers for SR-XRF and microanalysis

被引：11

作者：

Frank, M

Mears, CA

Labov, SE

Hiller, LJ

le Grand, JB

Lindeman, MA

Netel, H

Chow, D

Barfknecht, AT

机构：

[1] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[2] Conductus Inc, Sunnyvale, CA 94086 USA

来源：

JOURNAL OF SYNCHROTRON RADIATION | 1998年 / 5卷

关键词：

cryogenic detectors; low-temperature detectors; microcalorimeters; X-ray fluorescence; X-ray spectroscopy;

D O I：

10.1107/S0909049597014465

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Experimental results are presented obtained with a cryogenically cooled high-resolution X-ray spectrometer based on a 141 x 141 mu m Nb-Al-Al2O3-Al-Nb superconducting tunnel junction (STJ) detector in an SR-XRF demonstration experiment. STJ detectors can operate at count rates approaching those of semiconductor detectors while still providing a significantly better energy resolution for soft X-rays. By measuring fluorescence X-rays from samples containing transition metals and low-Z elements, an FWHM energy resolution of 6-15 eV for X-rays in the energy range 180-1100 eV has been obtained. The results show that, in the near future, STJ detectors may prove very useful in XRF and microanalysis applications.

引用

收藏

页码：515 / 517

页数：3

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