Issue
EPL
Volume 86, Number 6, June 2009
Article Number 66007
Number of page(s) 5
Section Condensed Matter: Structural, Mechanical and Thermal Properties
DOI http://dx.doi.org/10.1209/0295-5075/86/66007
Published online 10 July 2009
EPL, 86 (2009) 66007
DOI: 10.1209/0295-5075/86/66007

Neutron scattering kernel for solid deuterium

J. R. Granada

Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica 8400 S.C. de Bariloche (RN), Argentina


received 6 March 2009; accepted in final form 10 June 2009; published June 2009
published online 10 July 2009

Abstract
A new scattering kernel to describe the interaction of slow neutrons with solid deuterium was developed. The main characteristics of that system are contained in the formalism, including the lattice's density of states, the Young-Koppel quantum treatment of the rotations, and the internal molecular vibrations. The elastic processes involving coherent and incoherent contributions are fully described, as well as the spin-correlation effects. The results from the new model are compared with the best available experimental data, showing very good agreement.

PACS
61.05.fd - Theories of neutron diffraction and scattering.
28.20.-v - Neutron physics.
78.70.Nx - Neutron inelastic scattering.

© EPLA 2009