title: Ultra-High Resolution Inelastic Neutron Scattering.
abstract: Two types of ultra high energy resolution neutron scattering instruments, the backscattering spectrometer and the spin echo spectrometer, are described. Examples of the types of research which can be done with these instruments are given and plans for a cold neutron backscattering spectrometer which will be built in the NIST Cold Neutron Research Facility (CNRF) are discussed. It is hoped that this information will be of use to researchers considering neutron scattering experiments at NIST.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899.
authors.forename: D A
authors.initials: DA
authors.lastname: Neumann
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899.
authors.forename: B
authors.initials: B
authors.lastname: Hammouda
keywords: diffusion; inelastic neutron scattering; molecular reorientations; neutron backscattering spectrometers; neutron spin-echo spectrometers; polymer dynamics; rotational tunneling