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Title: Large-q neutron inclusive-scattering data from liquid 4He
Author: Rinat, A. S.
Tarangin, M. F.
Mazzanti Castrillejo, Ferran
Polls Martí, Artur
Keywords: Heli líquid
Dispersió de neutrons
Liquid helium
Neutrons scattering
Issue Date: 1998
Publisher: The American Physical Society
Abstract: We report dynamical calculations for large- q structure functions of liquid 4 He at T = 1.6 and 2.3 K and compare those with recent MARI data. We extend those calculations far beyond the experimental range q <~ 29 Å − 1 in order to study the approach of the response to its asymptotic limit for a system with interactions having a strong short-range repulsion. We find only small deviations from theoretical 1 / q behavior, valid for smooth V . We repeat an extraction by Glyde et al. of cumulant coefficients from data which are invariably very well reproduced. We argue that fits determine the single atom momentum distribution, but express doubt as to the extraction of meaningful final state interaction parameters.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 1998, vol. 57, núm. 9, p. 5347-5357
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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