Demonstration of a novel focusing small-angle neutron scattering instrument equipped with axisymmetric mirrors

Dazhi Liu, Boris Khaykovich (), Mikhail V. Gubarev, J. Lee Robertson, Lowell Crow, Brian D. Ramsey and David E. Moncton
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Dazhi Liu: Nuclear Reactor Laboratory, Massachusetts Institute of Technology
Boris Khaykovich: Nuclear Reactor Laboratory, Massachusetts Institute of Technology
Mikhail V. Gubarev: Marshall Space Flight Center, NASA, VP62
J. Lee Robertson: Oak Ridge National Laboratory
Lowell Crow: Oak Ridge National Laboratory
Brian D. Ramsey: Marshall Space Flight Center, NASA, VP62
David E. Moncton: Nuclear Reactor Laboratory, Massachusetts Institute of Technology

Nature Communications, 2013, vol. 4, issue 1, 1-5

Abstract: Abstract Small-angle neutron scattering (SANS) is the most significant neutron technique in terms of impact on science and engineering. However, the basic design of SANS facilities has not changed since the technique’s inception about 40 years ago, as all SANS instruments, save a few, are still designed as pinhole cameras. Here we demonstrate a novel concept for a SANS instrument based on axisymmetric focusing mirrors. We build and test a small prototype, which shows a performance comparable to that of conventional large SANS facilities. By using a detector with 48-μm pixels, we build the most compact SANS instrument in the world. This work, together with the recent demonstration that such mirrors could increase the signal rate at least 50-fold, for large samples, while improving resolution, paves the way to novel SANS instruments, thus affecting a broad community of scientists and engineers.

Date: 2013
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DOI: 10.1038/ncomms3556

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