Transient structures of crystals and liquids: An x-ray diffraction and EXAFS study Conference Paper uri icon

abstract

  • CBr 4 in solution was excited with 266nm picosecond pulses and the spectra and kinetics of the excited states, intermediate and final products were recorded. A long lived CBr 4 dissociation transient characterized by a broad absorption band with a maximum at 480 nm was found to be a solvent stabilized ion pair, (CBr +, // Br -) solv. EXAFS experiments reveal the structure of CBr 4 and the final dissociation products in solution. Time resolved EXAFS studies are performed to detect and determine the structure of the dissociation intermediates as a function of time, with a resolution of a few picoseconds and 0.02 A. Transient lattice structures have been observed in metalic nano-crystals after been heated with pulsed laser excitation. The distortion of the lattice of Au (111) 150 nm thick film as a function of time after excitation has been measured.

name of conference

  • 26th International Congress on High-Speed Photography and Photonics

published proceedings

  • 26TH INTERNATIONAL CONGRESS ON HIGH SPEED PHOTOGRAPHY AND PHOTONICS

author list (cited authors)

  • Tomov, I. V., Chen, J., Zhang, H., & Rentzepis, P. M.

citation count

  • 0

complete list of authors

  • Tomov, IV||Chen, J||Zhang, H||Rentzepis, PM

editor list (cited editors)

  • Paisley, D. L., Kleinfelder, S., Snyder, D. R., & Thompson, B. J.

publication date

  • March 2005