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Separation of the inelastic and elastic scattering in time-of-flight mode on the pinhole small-angle neutron scattering diffractometer K-WS-2.

ABSTRACT: To study and control the incoherent inelastic background in small-angle neutron scattering, which makes a significant contribution to the detected scattering from hydrocarbon systems, the KWS-2 small-angle neutron scattering diffractometer operated by the Jülich Centre for Neutron Science (JCNS) at Heinz-Maier Leibnitz Zentrum (MLZ), Garching, Germany, was equipped with a secondary single-disc chopper that is placed in front of the sample stage. This makes it possible to record in time-of-flight mode the scattered neutrons in the high-Q regime of the instrument (i.e. short incoming wavelengths and detection distances) and to discard the inelastic component from the measured data. Examples of measurements on different materials routinely used as standard samples, sample containers and solvents in the experiments at KWS-2 are presented. When only the elastic region of the spectrum is used in the data-reduction procedure, a decrease of up to two times in the incoherent background of the experimentally measured scattering cross section may be obtained. The proof of principle is demonstrated on a solution of bovine serum albumin in D₂O.

SUBMITTER: Balacescu L

PROVIDER: S-EPMC8366428 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Tuning the instrument resolution using chopper and time of flight at the small-angle neutron scattering diffractometer KWS-2.

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| S-EPMC4665661 | biostudies-literature

New Insights about CuO Nanoparticles from Inelastic Neutron Scattering.

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Computing inelastic neutron scattering spectra from molecular dynamics trajectories.

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The interpretation of polycrystalline coherent inelastic neutron scattering from aluminium.

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SENJU: a new time-of-flight single-crystal neutron diffractometer at J-PARC.

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Portraying entanglement between molecular qubits with four-dimensional inelastic neutron scattering.

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| S-EPMC5321722 | biostudies-literature

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| S-EPMC5988002 | biostudies-literature

Elastic Scattering Spectroscopy (ESS): an Instrument-Concept for Dynamics of Complex (Bio-) Systems From Elastic Neutron Scattering.

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| S-EPMC5050422 | biostudies-literature

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| S-EPMC8493624 | biostudies-literature

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