The high-flux backscattering spectrometer at the NIST Center for Neutron Research

By A. Meyer, R. Dimeo, P. Gehring, D. Neumann. 2002

256 citations recorded by the source corpus.

We describe the design and current performance of the high-flux backscattering spectrometer located at the NIST Center for Neutron Research. The design incorporates several state-of-the-art neutron optical devices to achieve the highest flux on sample possible while maintaining an energy resolution of less than 1 μeV. Foremost among these is a novel phase-space transformation chopper that significantly reduces the mismatch between the beam divergences of the primary and secondary parts of the instrument. This resolves a long-standing problem of backscattering spectrometers, and produces a relative gain in neutron flux of 4.2. A high-speed Doppler-driven monochromator system has been built that is capable of achieving energy transfers of up to ±50 μeV, thereby extending the dynamic range of this type of spectrometer by more than a factor of 2 over that of other reactor-based backscattering instruments.

Subfields: Geophysics, Radiation

View Paper: https://www.semanticscholar.org/paper/7707ed1aa7905458efa3cabfe09a7039d461f1f1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

1. M. Grimaldo
2. F. Roosen‐Runge
3. Fajun Zhang
4. Frank Schreiber
5. T. Seydel
6. A. Schweikart

Citations in the corpus

• Dynamics of proteins in solution (2019, background): “In a subsequent NBS study, Grimaldo et al. (2014) measured the apparent self-diffusion of the distinctly non-spherical Y-shaped γ-globulins in D2O as a function of w.”