Lattice and Molecular Vibrations in Single Crystal I2 at 77 K by Inelastic Neutron Scattering

H. G. Smith; Mourits Nielsen; C. B. Clark

doi:10.1016/0009-2614(75)85456-X

Lattice and Molecular Vibrations in Single Crystal I2 at 77 K by Inelastic Neutron Scattering

H. G. Smith, Mourits Nielsen, C. B. Clark

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Phonon dispersion curves of single crystal iodine at 77 K have been measured by one-phonon coherent inelastic neutron scattering techniques. The data are analysed in terms of two Buckingham-six intermolecular potentials; one to represent the shortest intermolecular interaction (3.5 Å) and the other to represent the more distant interactions. Moderate agreement is obtained between the observed and calculated frequencies, but it also oappears necessary to treat the second-nearest-neighbor interaction (3.97 Å) separately from the van der Waals interactions (distances ⩾ 4.2 Å).

Original language	English
Journal	Chemical Physics Letters
Volume	33
Issue number	1
Pages (from-to)	75-78
ISSN	0009-2614
DOIs	https://doi.org/10.1016/0009-2614(75)85456-X
Publication status	Published - 1975

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@article{b28fe1267790451d9766388238c3ffaa,

title = "Lattice and Molecular Vibrations in Single Crystal I2 at 77 K by Inelastic Neutron Scattering",

abstract = "Phonon dispersion curves of single crystal iodine at 77 K have been measured by one-phonon coherent inelastic neutron scattering techniques. The data are analysed in terms of two Buckingham-six intermolecular potentials; one to represent the shortest intermolecular interaction (3.5 {\AA}) and the other to represent the more distant interactions. Moderate agreement is obtained between the observed and calculated frequencies, but it also oappears necessary to treat the second-nearest-neighbor interaction (3.97 {\AA}) separately from the van der Waals interactions (distances ⩾ 4.2 {\AA}).",

author = "Smith, {H. G.} and Mourits Nielsen and Clark, {C. B.}",

year = "1975",

doi = "10.1016/0009-2614(75)85456-X",

language = "English",

volume = "33",

pages = "75--78",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

number = "1",

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TY - JOUR

T1 - Lattice and Molecular Vibrations in Single Crystal I2 at 77 K by Inelastic Neutron Scattering

AU - Smith, H. G.

AU - Nielsen, Mourits

AU - Clark, C. B.

PY - 1975

Y1 - 1975

N2 - Phonon dispersion curves of single crystal iodine at 77 K have been measured by one-phonon coherent inelastic neutron scattering techniques. The data are analysed in terms of two Buckingham-six intermolecular potentials; one to represent the shortest intermolecular interaction (3.5 Å) and the other to represent the more distant interactions. Moderate agreement is obtained between the observed and calculated frequencies, but it also oappears necessary to treat the second-nearest-neighbor interaction (3.97 Å) separately from the van der Waals interactions (distances ⩾ 4.2 Å).

AB - Phonon dispersion curves of single crystal iodine at 77 K have been measured by one-phonon coherent inelastic neutron scattering techniques. The data are analysed in terms of two Buckingham-six intermolecular potentials; one to represent the shortest intermolecular interaction (3.5 Å) and the other to represent the more distant interactions. Moderate agreement is obtained between the observed and calculated frequencies, but it also oappears necessary to treat the second-nearest-neighbor interaction (3.97 Å) separately from the van der Waals interactions (distances ⩾ 4.2 Å).

U2 - 10.1016/0009-2614(75)85456-X

DO - 10.1016/0009-2614(75)85456-X

M3 - Journal article

VL - 33

SP - 75

EP - 78

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 1

ER -