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INTERNATIONAL SCHOOL OF CRYSTALLOGRAPHY

23rd Course: X-RAY AND NEUTRON DYNAMICAL DIFFRACTION:
THEORY AND APPLICATIONS


A NATO Advanced Study Institute


ERICE-SICILY: 9 - 21 APRIL 1996


Sponsored by the:


PROGRAMME AND LECTURERS

DYNAMICAL THEORY OF X-RAY AND NEUTRON DIFFRACTION
Dynamical diffraction by perfect and deformed crystals (plane waves, spherical waves, ray theory, Takagi-Taupin theory)

SYNCHROTRON RADIATION FACILITIES AND X-RAY OPTICS FOR SYNCHROTRON RADIATION
Production and special properties of synchrotron radiation, Optical designs for synchrotron radiation, X-ray polarization

STATISTICAL THEORY OF DYNAMICAL DIFFRACTION IN CRYSTALS
THEORY OF RESONANT NUCLEAR SCATTERING AND MAGNETIC SCATTERING
X-RAY DIFFRACTION TOPOGRAPHY

Techniques, contrast of defects, applications (crystal growth, microdefects, plastic deformation, magnetism, phase transitions). Perspectives offered by 3rd generation sources

NEUTRON TOPOGRAPHY
Special capabilities of neutron topography

X-RAY STANDING WAVES & APPLICATIONS
Basic principles and general applications, Surface structures and thermal vibration studies, Standing Waves in long period structures

THEORY AND APPLICATIONS OF HIGH RESOLUTION DIFFRACTOMETRY
Multiple crystal arrangements, Characterization of lattice defects in ion-implanted silicon, Reciprocal space mapping

MULTIPLE BEAM DIFFRACTION
General theory, perfect and mosaic crystals, Three-beam dynamical diffraction and its applications to phase determinations

X-RAY AND NEUTRON INTERFEROMETRY
Principles and applications


PURPOSE OF THE COURSE

The dynamical theory of X-ray and neutron diffraction constitutes the theoretical basis for the characterization techniques of nearly perfect crystals such as high technology materials and for the X-ray optical devices used in all modern applications of Synchrotron Radiation (EXAFS, topography, multiple crystal diffractometry, magnetic scattering, etc.): a new interest has developed for the applications of the dynamical theory because of (a) the possibilities offered by synchrotron radiation for in situ, real time, studies and the development of computer simulations in X-ray or neutron topography, X-ray standing waves and high resolution diffractometry for the assessment of the structural properties of the bulk and surfaces of increasingly complex electronic materials as well as of the interfaces of multilayered structures, (b) the interesting perspectives opened by the recent developments on X-ray magnetic and nuclear scattering, (c) the use of X-ray and neutron interferometry in modern metrology.
The aim of the Course is (a) to teach both the bases of dynamical theory for the newcomer and its most modern developments for the more advanced students (b) to review the main applications of X-ray and neutron dynamical theory and (c) to discuss the experimental set-ups at the synchrotron beamlines. Computer-assisted tutorials will provide an opportunity for students to learn to use software packages to explore individually the applications of dynamical theory.


Group Photo


Some moments during the Course







DIRECTORS OF THE COURSE: A. AUTHIER - S. LAGOMARSINO

DIRECTOR OF THE SCHOOL: T.L. BLUNDELL

DIRECTOR OF THE CENTRE: A. ZICHICHI