Origin of the intensity deficit in neutron Compton scattering

Neutron Compton scattering measurements in a variety of materials have shown a relative deficit in the total signal from hydrogen compared to deuterium and heavier ions. We show here that a breakdown in the Born-Oppenheimer approximation in the final states of the scattering process leads to such a...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2005-02, Vol.71 (5), p.054107.1-054107.6, Article 054107
Main Authors: REITER, G. F, PLATZMAN, P. M
Format: Article
Language:English
Subjects:
BORN-OPPENHEIMER APPROXIMATION
COMPTON EFFECT
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Condensed matter: electronic structure, electrical, magnetic, and optical properties
DEUTERIUM
Exact sciences and technology
HEAVY IONS
HYDROGEN
MATERIALS SCIENCE
NEUTRON DIFFRACTION
Neutron inelastic scattering
NEUTRONS
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other interactions of matter with particles and radiation
Physics
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Summary:Neutron Compton scattering measurements in a variety of materials have shown a relative deficit in the total signal from hydrogen compared to deuterium and heavier ions. We show here that a breakdown in the Born-Oppenheimer approximation in the final states of the scattering process leads to such a deficit and may be responsible for the effect.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.71.054107