Open AccessFeasibility of Laboratory-Based EXAFS Spectroscopy with Cryogenic Detectors
Author(s) -
Simon J. George,
M. Carpenter,
S. Friedrich,
R. Cantor
Publication year - 2020
Publication title -
journal of low temperature physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.598
H-Index - 67
eISSN - 1573-7357
pISSN - 0022-2291
DOI - 10.1007/s10909-020-02474-7
Subject(s) - extended x ray absorption fine structure , detector , synchrotron radiation , spectrometer , spectroscopy , absorption (acoustics) , materials science , optics , absorption spectroscopy , spectral line , synchrotron , x ray detector , resolution (logic) , physics , computer science , quantum mechanics , astronomy , artificial intelligence
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 (STJ) detectors are well-suited for this application.