Optimization of detection strategies for epithermal neutron spectroscopy using photon-sensitive detectors

The Review of Scientific Instruments
Pierfrancesco UlpianiR Senesi

Abstract

In this work, we discuss an improved detection procedure for the photon-sensitive yttrium-aluminum-perovskite detectors installed on the VESUVIO spectrometer at the ISIS pulsed neutron and muon source. By decreasing the low-level energy threshold of detected photons, we observe an increased count rate up to a factor ∼3, and a decrease of relative error bars and noise of ∼40% and 35%, respectively, for deep inelastic neutron scattering measurements. In addition, we demonstrate how the reported optimization may increase the accuracy in the line shape analysis of neutron Compton profiles, as well as in the application of the mean-force approach to detect the anisotropy and anharmonicity in the single-particle local potential. We envisage that such an upgrade of the detection procedure would have a substantial impact on the VESUVIO scientific programme based on deep inelastic neutron scattering investigations.

References

Sep 28, 2010·Physical Review Letters·Lin LinMichele Parrinello
Aug 13, 2015·The Journal of Physical Chemistry Letters·A ParmentierC Andreani
Apr 7, 2016·Chemical Reviews·Michele CeriottiThomas E Markland
May 21, 2016·The Journal of Physical Chemistry Letters·Bingqing ChengMichele Ceriotti

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Citations

Jan 23, 2020·Sensors·Giulia FestaCarla Andreani
Oct 10, 2020·The Journal of Chemical Physics·Alessio BocediRoberto Senesi
Apr 28, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Giovanni RomanelliRoberto Senesi

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