A local dynamic correlation function from inelastic neutron scattering

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Information about local and dynamic atomic correlations can be obtained from inelastic neutron scattering measurements by Fourier transform of the Q-dependent intensity oscillations at a particular frequency. A local dynamic structure function, S(r,{omega}), is defined from the dynamic scattering function, S(Q,{omega}), such that the elastic and frequency-integrated limits correspond to the average and instantaneous pair-distribution functions, respectively. As an example, S(r,{omega}) is calculated for polycrystalline aluminum in a model where atomic motions are entirely due to harmonic phonons.

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11 p.

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McQueeney, R.J. July 13, 1997.

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Description

Information about local and dynamic atomic correlations can be obtained from inelastic neutron scattering measurements by Fourier transform of the Q-dependent intensity oscillations at a particular frequency. A local dynamic structure function, S(r,{omega}), is defined from the dynamic scattering function, S(Q,{omega}), such that the elastic and frequency-integrated limits correspond to the average and instantaneous pair-distribution functions, respectively. As an example, S(r,{omega}) is calculated for polycrystalline aluminum in a model where atomic motions are entirely due to harmonic phonons.

Physical Description

11 p.

Notes

INIS; OSTI as DE98000804

Source

  • International conference on neutron scattering (ICNS), Toronto (Canada), 17-21 Aug 1997

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  • Other: DE98000804
  • Report No.: LA-UR--97-2880
  • Report No.: CONF-970814--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 543655
  • Archival Resource Key: ark:/67531/metadc698514

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Office of Scientific & Technical Information Technical Reports

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  • July 13, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 29, 2016, 3:57 p.m.

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McQueeney, R.J. A local dynamic correlation function from inelastic neutron scattering, article, July 13, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc698514/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.