 1  Author
 RalphO. Simmons  Requires cookie*   Title
 SingleParticle Momentum Distributions from Deep Inelastic Neutron Scattering (DINS)    Abstract
 Singleparticle longitudinal momentum distributions in condensed matter are now accessible to direct measurement using eV neutrons. Some systems of particular interest include a) quantum solids and fluids, formed from "Hie, 4 He, and H 2 , b) prototype molecular crystals, formed from noble gases, c) fluids such as H 2 and Ne, which show deviations from classical behavior and d) mixed systems, in which guesthost interactions may be important. Quantum solids can be investigated at substantially different densities, for different structures, and further, can be compared to the corresponding fluids, with which they have significant similarities in their singleparticle properties such as their momentum distributions. Noble gas solids comprise a graduated family with progressively varying importance of zeropoint energy, of phonon anharmonicity, and of multibody forces. They have also been very useful for matrix isolation studies, and eV neutron scattering can yield their centerofmass motions, not previously seen directly. Finally, noble gas fluids can be used to investigate the nature and extent of finalstate effects in the neutron scatttering. Such effects are defined to be the difference between the longitudinal "neutron Compton profile" and the longitudinal momentum distribution.   
Reference
 Z. Naturforsch. 48a, 415—424 (1993); received December 27 1991   
Published
 1993   
Keywords
 Momentum distribution, Dynamics, Neutron scattering   
Similar Items
 Find   DEBUG INFO
    TEIXML for
 default:Reihe_A/48/ZNA199348a0415.pdf    Identifier
 ZNA199348a0415    Volume
 48  
