Lattice and molecular vibrations in single crystal I2 at 77 K by inelastic neutron scattering

✍ Scribed by H.G. Smith; M. Nielsen; C.B. Clark

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 398 KB
• Volume: 33
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85456-x

✦ Synopsis

Phonon dispersion curves of single crystal iodine at 77 K i-zve been measured by cne-p~onon conerect inelastic neutron scattering techniques. The data ae analysed in terms of two Buckingham-six intennolecuh potenti; one to represent the shortest intermolecular interaction (3.5 A) and the other to represent the more distant interactions. Moderate ageement is obtained between the observed and .gaIculated frequencies, but it 2150 appevs necesw to treat the stcond-nearest-neighfrbor interaction (3.97 A) separately from the van der Waals interactions (distances 2 4.2 A).