4.2 Article

Feasibility of Laboratory-Based EXAFS Spectroscopy with Cryogenic Detectors

期刊

JOURNAL OF LOW TEMPERATURE PHYSICS
卷 200, 期 5-6, 页码 479-484

出版社

SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-020-02474-7

关键词

Cryogenic detectors; EXAFS; STJ detectors; XAS

资金

  1. U.S. NIH [SBIR GM122163]
  2. U.S. DOE [DE-AC52-07NA27344]

向作者/读者索取更多资源

Extended X-ray absorption fine structure (EXAFS) spectroscopy is a powerful technique that gives element-specific information about the structure of molecules. The development of a laboratory EXAFS spectrometer capable of measuring transmission spectra would be a significant advance as the technique is currently only available at synchrotron radiation lightsources. Here, we explore the potential of cryogenic detectors as the energy-resolving component of a laboratory transmission EXAFS instrument. We examine the energy resolution, count rate, and detector stability needed for good EXAFS spectra and compare these to the properties of cryogenic detectors and conventional X-ray optics. We find that superconducting tunnel junction detectors are well-suited for this application.

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