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arXiv · 1904.01680

Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function

Antonio Benedetto·Gordon J. Kearley
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Abstract

We present a new neutron-scattering approach to access the van Hove distribution function directly in the time domain, I(t), which reflects the system dynamics. Currently, I(t) is essentially determined from neutron energy-exchange. Our method consists of the straightforward measurement of the running time-integral of I(t), by computing the portion of scattered neutrons corresponding to species at rest within a time t, (conceptually elastic scattering). Previous attempts failed to recognise this connection. Starting from a theoretical standpoint, a practical realisation is assessed via numerical methods and an instrument simulation.

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Antonio Benedetto, Gordon J. Kearley. 2019-03-30. Dynamics from elastic neutron-scattering via direct measurement of the running time-integral of the van Hove distribution function. https://doi.org/10.1038/s41598-019-46835-z

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