Abstract
We report inelastic neutron scattering measurements of the neutron Compton profile, J(y), for Be and for D in polycrystalline over a range of momentum transfers, q between 27 and . The measurements were performed using the inverse geometry spectrometer eVS which is situated at the UK pulsed spallation neutron source ISIS. We have investigated deviations from impulse approximation (IA) scattering which are generically referred to as final-state effects (FSEs) using a method described by Sears. This method allows both the magnitude and the q dependence of the FSE to be studied. Analysis of the measured data was compared with analysis of numerical simulations based on the harmonic approximation and good agreement was found for both and Be. Finally we have shown how , where V is the interatomic potential, can be extracted from the antisymmetric component of J(y).
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