Seminars Archive
Milos Kopecky
Abstract
Wednesday, April 4, 2000, 11:30
Seminar Room, ground floor, Building "T"
Sincrotrone Trieste, Basovizza
X-ray fluorescence holography: 3D imaging with atomic resolution
Milos Kopecky
(Institute of Physics, Prague)
ABSTRACT
X-ray fluorescence holography (XFH) is a new technique for three-dimensional
imaging of environments of selected atoms with sub-angstrom
resolution. XFH is a promising tool for determination of structures
especially because:
(i) holographic patterns contain information on both the amplitudes
and the phases of scattered waves making thus possible direct reconstruction
of atomic positions,
(ii) this method, in principle, does not require the translation symmetry
of the sample.
A brief introduction to x-ray fluorescence holography will be presented.
The advantages and drawbacks of XFH will be discussed and compared
to those of other methods. A novel approach to recording of x-ray holograms
will be described. First results obtained on the diffraction beamline at
Elettra will be demonstrated.
