Author/Authors :
Heimann، نويسنده , , P.A. and Lindenberg، نويسنده , , A.M. and Kang، نويسنده , , I. and Johnson، نويسنده , , S. and Missalla، نويسنده , , T. and Chang، نويسنده , , Z. and Falcone، نويسنده , , R.W. and Schoenlein، نويسنده , , R.W. and Glover، نويسنده , , T.E. and Padmore، نويسنده , , H.A.، نويسنده ,
Abstract :
Coherent acoustic phonons have been observed in the X-ray diffraction of a laser-excited InSb crystal. Modeling based on time-dependent dynamical diffraction theory has allowed the extraction of fundamental constants, such as the electron-acoustic phonon coupling time. A dedicated beamline for time-resolved studies has been developed at the Advanced Light Source with special considerations toward high transmission, low scattering and a wide photon energy range. The facility combines a bend magnet beamline, time-resolved detectors and a femtosecond laser system.
