Volume 91, Number 1, July 2010
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||30 July 2010|
Phenomenon of anti-Bragg magnetic neutron diffraction
Theoretical Physics Department, V. A. Fock Institute of Physics, St. Petersburg State University Ulianovskaia 1, 198504 St. Petersburg, Russia
Accepted: 29 June 2010
Elastic magnetic scattering of slow neutrons by a N-electron target is considered. Contrary to the usual approximation that neutron is scattered by each atomic spin independently, the scattering by the whole target spin system is considered. The complete set of the total spin square eigenfunctions is used for the target degenerate ground state. Explicit analytical expressions for the scattering amplitude and differential cross-section are obtained. A new type (anti-Bragg) of angular dependence of the differential cross-section has been obtained for some target Hamiltonians.
PACS: 61.05.fd – Theories of neutron diffraction and scattering / 71.15.-m – Methods of electronic structure calculations
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.