Details

Autor(en) / Beteiligte

• 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 J
• Reintsema, C D
• Bennett, D A
• Vale, L R
• Hilton, G C
• Irwin, K D
• Schmidt, D R
• Sundström, V

Titel

Table-top ultrafast x-ray microcalorimeter spectrometry for molecular structure

Ist Teil von

• Physical review letters, 2013-03, Vol.110 (13), p.138302-138302, Article 138302

Ort / Verlag

United States

Erscheinungsjahr

2013

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• 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 ΔE=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.