Free Access
Microsc. Microanal. Microstruct.
Volume 8, Number 4-5, August / October 1997
Page(s) 239 - 249
Microsc. Microanal. Microstruct. 8, 239-249 (1997)
DOI: 10.1051/mmm:1997100

Stress evolution under neutron irradiation of NiC/Ti supermirrors

Kalyana N'Guy-Maréchal1, Alain Menelle1, Patrice Gergaud2 et Klaus Al Usta3

1  Laboratoire Léon Brillouin (CEA-CNRS), CE Saclay, 91191 Gif-sur-Yvette, France
2  MATOP, Faculté des Sciences de Saint Jérôme, 13397 Marseille Cedex, France
3  Compagnie Industrielle des Lasers, BP 27, Route de Nozay, 91460 Marcoussis, France

We present here the stress evolution under thermal neutrons irradiation of NiC/Ti multilayers used in supermirror neutron guides. After irradiation, titanium undergoes a change of structure. Stresses in nickel layers have been determined: it is shown that the evolution under irradiation depends on the deposition process.

6180H - Neutron effects.
6865 - Low dimensional structures: growth, structure and nonelectronic properties.
6112 - Neutron determination of structures.

Key words
internal stresses -- metallic superlattices -- mirrors -- neutron effects -- nickel compounds -- particle optics -- titanium -- X ray diffraction -- stress evolution -- neutron irradiation -- NiC Ti supermirrors -- thermal neutrons -- supermirror neutron guides -- structure -- deposition process -- NiC Ti

© EDP Sciences 1997