The 40m General Purpose Small-Angle Neutron Scattering Instrument at Oak Ridge National Laboratory

Wignall, George D.; Bailey, Katherine M.; Buchanan, Michelle V.; Butler, Paul D.; Heller, William T.; Littrell, Ken; Lynn, Gary W.; Melnichenko, Yuri B.; Myles, Dean A A; Urban, Volker S.

doi:10.1107/S0021889812027057

The 40m General Purpose Small-Angle Neutron Scattering Instrument at Oak Ridge National Laboratory

Journal Article · Mon Oct 01 04:00:00 EDT 2012 · Journal of Applied Crystallography

DOI:https://doi.org/10.1107/S0021889812027057· OSTI ID:1056938

^[1]; Bailey, Katherine M. ^[1]; ^[1]; Butler, Paul D. ^[1]; ^[1]; ^[1]; ^[1]; Melnichenko, Yuri B. ^[1]; ^[1]; ^[1]

ORNL

A high-flux, 40m long small-angle neutron scattering (SANS) instrument has been constructed at Oak Ridge National Laboratory (ORNL). The facility utilizes a mechanical velocity selector, pinhole collimation and a high count-rate (> 105 Hz), large-area (1m2) two-dimensional position-sensitive detector. The incident wavelength (λ), resolution (Δλ/λ), incident collimation and sample-detector distance are independently variable under computer control. The detector can translate 45cm off axis to increase the overall Q-range (< 0.001 < Q = 4πλ-1sin θ < 1 Å-1), where 2θ is the angle of scatter. The design and characteristics of this instrument are described along with examples of scattering data to illustrate the performance.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

OSTI ID:: 1056938

Journal Information:: Journal of Applied Crystallography, Journal Name: Journal of Applied Crystallography Journal Issue: 5 Vol. 45; ISSN 0021-8898

Country of Publication:: United States

Language:: English

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