THERMAL-NEUTRON SCATTERING BY SOLIDS - DEVELOPMENT AND APPLICATIONS OF A SYNTHETIC SCATTERING LAW

We have used a recently developed synthetic scattering function for so lids [1] to evaluate some quantities of interest with regard to differ ent problems In the field of Neutron Physics. Our model, based on a ne w prescription to represent the multiphonon contributions in the scatt ering process, has shown to produce excellent agreement with full mult iphonon calculations for Integral magnitudes of the scattering law. It contains no adjustable parameters and is given in terms of analytical functions, which makes it very convenient in term of computing time. In this work we present calculated results describing the differential cross section of Vanadium, as observed in typical pulsed neutron sour ce measurements. These calculations emphasize the effects of inelastic ity and anisotropy in the neutron scattering by that material, and con sequently, the limitations of its use as a normalizing standard.