ON THE THEORY OF INTERMOLECULAR AND CRYSTAL FIELD INTERACTIONS IN SOLID HYDROGEN
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Date
1992
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Publisher
Ohio State University
Abstract
High resolution infrared studies of the Q1(0) vibrational transition of D2 impurity in a solid hydrogen matrix and of the rovibrational $W_{1}(0)$ transition in solid $H_{2}$ have revealed a multitude of interesting features, the precise interpretation of which requires the refinement of existing theory.$^{1}$ Analysis of the $Q_{1}$(0) spectrum of $D_{2}$ is based on the J=1 quadrupole-induced dipole moment mechanism analogous to that used for the Q-branch of $H_{2}2^{2}$ Fine structure is interpreted on the basis of a calculation of the crystal field of the J=1 impurity in the presence of a neighboring J=0 $D_{2}$ molecule. The $W_{1}$(0) main feature is accompanied by a large number of satellites due to coupling of the J=6 excitation with J=1 impurities in the lattice. We discuss the fit of the spectrum based on axially symmetric interactions of the J=6/J=1 pair as well as non-axially symmetric interactions resulting from the crystal environment.
Description
1. J. Van Kranendonk, Solid Hydrogen. 1983 Plenum Press, New York 2. V.F. Sears and J. Van Kranendonk, Canadian Journal of Physics, {\bf 42} , 980 (1964)
Author Institution: Department of Chemistry and Department Astronomy and Astrophysics, The University of Chicago
Author Institution: Department of Chemistry and Department Astronomy and Astrophysics, The University of Chicago