Table-top ultrafast X-ray microcalorimeter spectrometry for molecular structure
Uhlig, J., Fullagar, W., Ullom, J.N., Doriese, W.B., Fowler, J.W., Swetz, D.S., Gador, N., Canton, S.E., Kinnunen, K., Maasilta, I., Bennett, C. D., Vale, L.R., Hilton, G.C., Irwin, K.D., Schmidt, D.R., & Sundström, V. (2013). Table-top ultrafast X-ray microcalorimeter spectrometry for molecular structure. Physical Review Letters, 110, Article 138302. https://doi.org/10.1103/PhysRevLett.110.138302
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Physical Review LettersAuthors
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2013Copyright
© 2013 American Physical Society. Published in this repository with the kind permission of the publisher.
This work presents an x-ray absorption measurement by use of ionizing radiation generated by
a femtosecond pulsed laser source. The spectrometer was a microcalorimetric array whose pixels are
capable of accurately measuring energies of individual radiation quanta. An isotropic continuum x-ray
spectrum in the few-keV range was generated from a laser plasma source with a water-jet target. X rays
were transmitted through a ferrocene powder sample to the detector, whose pixels have average photon
energy resolution E ¼ 3:14 eV full-width-at-half-maximum at 5.9 keV. The bond distance of ferrocene
was retrieved from this first hard-x-ray absorption fine-structure spectrum collected with an energydispersive
detector. This technique will be broadly enabling for time-resolved observations of structural
dynamics in photoactive systems.
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