Determination of the Incommensurately Modulated Structure of Alpha-Uranium Below 37K.
Abstract
The modulated structure of alpha-Uranium is analyzed using the neutron scattering data. The results of the refinements are given for all the superspace groups compatible with the neutron diffraction pattern. Fits to the experimental data of equal quality are obtained for different structure models (different symmetries), thus prohibiting the determination of the structure from neutron scattering alone. Together with the recently reported results of electron microscopy, the refinements lead to an unique assignment of a superspace group to the incommensurately modulated structure of alpha-uranium below T = 37 K, with the tentative symbol P2/m11(beta)(gamma). The values of the structural parameters, as follow from the refinements, are also reported.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1986
- Accession Number
- ADA175750
Entities
People
- Sander Van Smaalen
- Thomas F. George
Organizations
- University at Buffalo