Research

André Authier is a specialist of the dynamical theory of X-ray diffraction by crystals and X-ray topography. He was the first to make a direct observation of the propagation of X-ray wave fields in a crystal at the Bragg reflection and was one of the early contributors to the theory of the diffraction of X-rays by highly deformed crystals.

With co-worker F. Balibar, he determined the limit above which ray theory is no longer applicable. He analysed and explained the formation of the various parts of the image of the defects in X-ray topography. He applied X-ray topography to the characterization and study of crystal defects, such as growth defects as well in synthetic crystals and in minerals, ferroelectric domains and electrical defects in semiconductors. He is now interested in the history of Crystallography.

He was the first President of the European Crystallographic Association (1972-1975) and President of the International Union of Crystallography (1990-1993).

Werdegang

• 1971-1996 Professeur, Université P. et M. Curie, France
• 1968-1971 Professeur sans chaire, Faculté des Sciences,  Université de Paris
• 1961-1965 Sous-Directeur du Laboratoire de Physique Théorique au Collège de France
• 1961 DSc. Paris University
• 1955-1956 Visiting Fellow, M.I.T.
• 1951-1955 Elève de l’Ecole Normale Supérieure

Funktionen

• Editor of Volume D, Crystal Physics, of the International Tables of Crystallography, First Edition 2003
• 1993-2001 Editor of Acta Crystallographica, Section A
• 1991-1994 Member of the "Microgravity Advisory Committee", ", European Space Agency
• 1990-1993 President of the International Union of Crystallography
• 1977-1981 Member of the "Material Science Working Group", European Space Agency
• 1972-1975 President of the European Crystallographic Association

Auszeichnungen und Mitgliedschaften

• 2007 Officier de la Légion d’Honneur
• 1991 Chevalier de la Légion d'Honneur
• 1983 Silver medal CNES (French National Centre for Spatial Research)
• 1969 Chevalier de l'Ordre National du Mérite
• 1963 Prix Danton de l'Académie des Sciences
• 1961 Médaille de bronze du C.N.R.S.