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OBSERVATION BY NEUTRON INCOHERENT INELASTIC SPECTROSCOPY OF SPLIT HIGHER HARMONICS OF THE AMMONIUM ION LIBRATIONAL MODE IN THE CUBIC PHASE OF NH4BR

Abstract:
This paper deals with high-resolution neutron scattering studies of the librational mode v6 (0 → 1) and its higher overtones for NH+4 in the ordered cubic phase of ammonium bromide, NH4Br. Experiments were conducted on the time-focused crystal analyser (TFXA) spectrometer of the UK spallation neutron source, ISIS. v6 (0 → 2) and v6 (0 → 3) show distinct splittings of ≈ 5 meV, the results are compared with optical data and a theoretical model. © 1986.
Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
TOMKINSON, J More by this author
Journal:
CHEMICAL PHYSICS LETTERS
Volume:
127
Issue:
5
Pages:
483-486
Publication date:
1986-06-27
DOI:
ISSN:
0009-2614
URN:
uuid:8fb94639-4105-4201-9ab6-35ca28c38e85
Source identifiers:
121757
Local pid:
pubs:121757
Language:
English

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