Table-Top Ultrafast X-Ray Microcalorimeter Spectrometry for Molecular Structure

Summary, in English

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 Delta E = 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 energy-dispersive detector. This technique will be broadly enabling for time-resolved observations of structural dynamics in photoactive systems. DOI: 10.1103/PhysRevLett.110.138302

• Author: Jens Uhlig; Wilfred Fullagar; J. N. Ullom; W. B. Doriese; J. W. Fowler; D. S. Swetz; N. Gador; Sophie Canton; K. Kinnunen; I. J. Maasilta; C. D. Reintsema; D. A. Bennett; L. R. Vale; G. C. Hilton; K. D. Irwin; D. R. Schmidt; Villy Sundström
• Department/s: Chemical Physics; NanoLund: Centre for Nanoscience
• Publishing year: 2013
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 110
• Issue: 13
• Links: http://dx.doi.org/10.1103/PhysRevLett.110.138302
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Atom and Molecular Physics and Optics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1079-7114