Study of the momentum distribution of a Zn single crystal using neutron Compton scattering

D. Nemirovsky, R. Moreh, K. H. Andersen, J. Mayers

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8 Scopus citations

Abstract

The neutron Compton scattering technique (NCS) was used for measuring the atomic momentum distribution, at ∼4.6 K, of an hep zinc single crystal in directions parallel and perpendicular to the hexagonal planes. A strong anisotropy has been observed and interpreted in terms of the anisotropic binding of the atoms in Zn. The data were used for deducing the zero-point mean-square atomic momenta 〈px2〉 and 〈pz2〉. These were combined with reported measured values of 〈x2〉 and 〈z2〉 obtained by the Mössbauer effect and used to test the predictions of the uncertainty principle for the two products 〈px2〉〈x2〉 and 〈pz2〉〈z2〉 near 0 K. The measured values of 〈px2〉 and 〈pz2〉 seem to conform to the requirements of the uncertainty relations to within 3%. The data are compared with those obtained using the nuclear resonance photon scattering (NRPS) technique.

Original languageEnglish
Pages (from-to)4293-4302
Number of pages10
JournalJournal of Physics Condensed Matter
Volume12
Issue number18
DOIs
StatePublished - 8 May 2000

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics

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