Ultrafast X-ray sources for time-resolved measurements

Masaki Hada, Jiro Matsuo

Research output: Contribution to journalReview articlepeer-review

5 Citations (Scopus)


Extremely short pulse X-ray sources have attracted considerable attention for unique use in time-resolved X-ray scattering, absorption, and diffraction measurements to investigate the molecular dynamics of chemical reaction in real time. The characteristics of X-ray sources based on accelerators and femtosecond lasers are reviewed from the viewpoints of the X-ray photon energy, pulse duration, intensity and stability of the pulses, and usability of the source. The X-ray generation mechanism of each of the source is discussed from both the experimental and theoretical bases. We also demonstrate the application of ultrafast X-ray diffraction measurements in the phase transition of vanadium dioxide using the laser-induced plasma X-ray source. The series of real-time structural observations with pulsed X-ray sources contributes toward understanding the mechanism of photo-induced nonequilibrium process.

Original languageEnglish
Pages (from-to)188-194
Number of pages7
JournalX-Ray Spectrometry
Issue number4
Publication statusPublished - Jul 2012


  • Femtosecond laser
  • Laser-induced plasma
  • Time-resolved measurement
  • X-ray sources

ASJC Scopus subject areas

  • Spectroscopy


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