Mass-selective neutron spectroscopy beyond the proton

M. Krzystyniak, A. G. Seel, S. E. Richards, M. J. Gutmann, F. Fernandez-Alonso

Research output: Contribution to journalConference articlepeer-review

23 Scopus citations

Abstract

We discuss ongoing methodological developments underpinning the determination of nuclear-momentum distributions from mass-resolved neutron Compton data of lightweight materials. To this end, two systems are considered in detail, namely, lithium hydride (including its deuterated counterpart) and squaric acid, an organic antiferroelectric material containing hydrogen, carbon, and oxygen. Beyond the usual case of the proton, our approach enables direct access to detailed line shape information associated with the underlying nuclear-momentum distributions of both deuterium and lithium. For oxygen and carbon, mean kinetic energies can also be obtained directly from the neutron data, as demonstrated by a detailed analysis of mass- resolved data from squaric acid. From an instrumentation point of view, this work provides a suitable platform for a detailed assessment of existing capabilities and future developments in mass-selective neutron spectroscopy on the VESUVIO spectrometer at ISIS.

Original languageBritish English
Article number012002
JournalJournal of Physics: Conference Series
Volume571
Issue number1
DOIs
StatePublished - 2014
Event6th Workshop in Electron Volt Neutron Spectroscopy: Frontiers and Horizons - Abingdon, United Kingdom
Duration: 20 Jan 201421 Jan 2014

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