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Valence‐to‐core X‐ray emission spectroscopy of titanium compounds using energy dispersive detectors
Author(s) -
MiajaAvila Luis,
O'Neil Galen C.,
Joe Young Il,
Morgan Kelsey M.,
Fowler Joseph W.,
Doriese William B.,
Ganly Brianna,
Lu Deyu,
Ravel Bruce,
Swetz Daniel S.,
Ullom Joel N.
Publication year - 2020
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.3183
Subject(s) - emission spectrum , titanium , valence (chemistry) , materials science , x ray spectroscopy , spectroscopy , synchrotron , spectral line , atomic physics , chemistry , physics , optics , organic chemistry , quantum mechanics , astronomy , metallurgy
X‐ray emission spectroscopy (XES) of transition metal compounds is a powerful tool for investigating the spin and oxidation state of the metal centers. Valence‐to‐core (vtc) XES is of special interest, as it contains information on the ligand nature, hybridization, and protonation. To date, most vtc‐XES studies have been performed with high‐brightness sources, such as synchrotrons, due to the weak fluorescence lines from vtc transitions. Here, we present a systematic study of the vtc‐XES for different titanium compounds in a laboratory setting using an X‐ray tube source and energy dispersive microcalorimeter sensors. With a full‐width at half‐maximum energy resolution of approximately 4 eV at the Ti Kβ lines, we measure the XES features of different titanium compounds and compare our results for the vtc line shapes and energies to previously published and newly acquired synchrotron data as well as to new theoretical calculations. Finally, we report simulations of the feasibility of performing time‐resolved vtc‐XES studies with a laser‐based plasma source in a laboratory setting. Our results show that microcalorimeter sensors can already perform high‐quality measurements of vtc‐XES features in a laboratory setting under static conditions and that dynamic measurements will be possible in the future after reasonable technological developments.