The Review Panel on Neutron Scattering has recommended an expanded budget to allow systematic development of the field. An alternative plan for the future of neutron research on condensed matter is presented here, in case it is not possible to fund the expanded budget. This plan leads, in a rational and logical way, to a world-class neutron source that will ensure the vitality of the field and exploit the many benefits that state-of-the-art neutron facilities can bring to programs in the materials and biological sciences.

Work on this project is focused on developing design and licensing information for the model facility. Facility modification designs and studies scheduled in 1980 have been completed with a draft report forwarded to DOE for review. Subcontracts for additional rack design analysis to include disassembled fuel were approved by DOE in late December and will be completed in mid-April. Essentially all the security design and licensing documentation work have been completed with the major effort remaining being editorial.

This paper presents theoretical and experimental findings on fibrous filters converted to electrostatic operation by a nonionizing electric field. Compared to a conventional fibrous filter, the electrostatic filter has a higher efficiency and a longer, useful life. The increased efficiency is attributed to a time independent attraction between polarized fibers and charged, polarized particles and a time dependent attraction between charged fibers and charged, polarized particles. The charge on the fibers results from a dynamic process of charge accumulation due to the particle deposits and a charge dissipation due to the fiber conductivity.

The Review Panel on Neutron Scattering has recommended an expanded budget to allow systematic development of the field. An alternative plan for the future of neutron research on condensed matter is presented here, in case it is not possible to fund the expanded budget. This plan leads, in a rational and logical way, to a world-class neutron source that will ensure the vitality of the field and exploit the many benefits that state-of-the-art neutron facilities can bring to programs in the materials and biological sciences. 2 tables. (RWR)

This report describes the initial results of a long term program to study order-disorder phenomena in dielectric thin films. To achieve this overall goal, an apparatus was constructed to permit the codeposition of a glass-forming additive such as SiO/sub 2/ in a polycrystalline matrix film such as MgO. The extent of crystallinity of mixture films in the MgO-SiO/sub 2/ system was determined using techniques developed for x-ray powder diffraction. With this approach, it was determined that the addition of SiO/sub 2/ in concentrations less than 20 mass % has a relatively small influence on crystallinity. On the other hand, at concentrations greater than 25% SiO/sub 2/ causes the mixture film to become completely disordered.