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The effect of phonon interactions on the orientational state of H 2
Author(s) -
Harris A. Brooks
Publication year - 2009
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560020735
Subject(s) - quadrupole , coupling constant , phonon , lattice vibration , coupling (piping) , condensed matter physics , constant (computer programming) , chemistry , lattice (music) , physics , atomic physics , quantum mechanics , materials science , computer science , acoustics , metallurgy , programming language
Discrepancies between the theoretical and experimental values of: ( a ) the frequency splitting of the Pake doublet, ( b ) the values of the quadrupole coupling constant, and ( c ) the orientational transition temperature for solid H 2 are pointed out. It is shown that these discrepancies are significant and can be at least partially explained by consideration of the interactions between molecular rotations and lattice vibrations. A table of revised experimental values of the quadrupole coupling constant, T, is given.