Extension of the time-dependent dynamical diffraction theory to 'optical phonon'-type distortions: application to diffraction from coherent acoustic and optical phonons.
Acta Crystallogr A 59:Pt 1 (2003) 7-13
Abstract:
An extension of the time-dependent Takagi-Taupin theory to 'optical phonon'-type distortions is presented. By splitting the susceptibility into the contributions from each atom in a unit cell, modifications to the structure factor as well as lattice parameter are taken into account. The result is a compact, surprisingly simple, equation with a strong formal similarity to the classical Takagi-Taupin equation, with the latter included as a special case. Time dependence is explicitly retained and thus the analysis is applicable to situations where the crystal is modified on time scales comparable with that for the X-rays to traverse an extinction depth. A comparison is made between the influence of coherent acoustic and optical phonons on the diffraction of X-rays. Numerical and perturbative analytical solutions of the generalized Takagi-Taupin equation are presented in the presence of such phonons.Absorption spectroscopy of Al XIII Ly-α radiation by an Fe XXIV plasma
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 81:1-4 (2003) 199-207
Investigation of the onset and development of forward scattering in an underdense plasma
PHYSICAL REVIEW LETTERS 90:24 (2003) ARTN 245001
Laser-induced shock compression of monocrystalline copper: characterization and analysis
ACTA MATERIALIA 51:5 (2003) 1211-1228
Time-Dependent Dynamical Diffraction Theory for Phonon-Type Distortions
Chapter in Nonlinear Optics, Quantum Optics, and Ultrafast Phenomena with X-Rays, Springer Nature (2003) 267-286