1. Table-top ultrafast X-ray microcalorimeter spectrometry for molecular structure
- Author
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Uhlig, J., Fullagar, W., Ullom, J.N., Doriese, W.B., Fowler, J.W., Swetz, D.S., Gador, N., Canton, S.E., Kinnunen, Kimmo, Maasilta, Ilari, Bennett, C.D.Reintsema D.A., Vale, L.R., Hilton, G.C., Irwin, K.D., Schmidt, D.R., and Sundström, V.
- Subjects
Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,Experimental materials physics - Abstract
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. peerReviewed
- Published
- 2013