# ANALYSIS OF THE NEAREST NEIGHBORING (nn) O-$H_{2}$ PAIR TRANSITIONS IN THE FUNDAMENTAL Q-BRANCH OF SOLID HYDROGEN: GROUP THEORY AND INTENSITY CALCULATIONS

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 dc.creator Chan, Man-Chor en_US dc.creator Oka, T. en_US dc.date.accessioned 2006-06-15T15:07:24Z dc.date.available 2006-06-15T15:07:24Z dc.date.issued 1991 en_US dc.identifier 1991-TF-3 en_US dc.identifier.uri http://hdl.handle.net/1811/12544 dc.description $^{1}$M.-C. Chan, M. Okumura, C. M. Gabrys, L.-W. Xu, B.D. Rehfuss, and T. Oka, submitted to Phys. Rev. Lett. $^{2}$R. E. Miller and J.C. Decius, J. Chem. Phys. 59, 4871 (1973). $^{3}$A. B. Harris, A.J. Berlinsky, and W. N. Hardy, Can. J. Phys. 55, 1180 (1977)."" en_US dc.description Author Institution: Department of Chemistry and Department of Astronomy and Astrophysics, the University of Chicago en_US dc.description.abstract A rich spectrum composed of hundreds of transitions with typical linewidth of $\sim 20$ MHz has recently been $observed^{1}$ in the fundamental Q branch of solid p-$H_{2}$ (containing $\sim$ 0.2\% o-$H_{2}$) using high resolution difference frequency infrared laser spectroscopy. These features have been ascribed to the anisotropic electrostatic quadrupole-quadrupole and crystal field splitting of the vibrational transition of a pair of interacting $o-H_{2}$ molecules. While we are far from good understanding of the rich spectrum, attempts have been made to assign the transitions due to nn pairs of $o-H_{2}$, based on group theoretical considerations, and the observed frequencies and intensities. The symmetry group of an nn pair has been constructed by extending the group theory of matrix isolated molecule developed by Miller and $Decius.^{2}$ The transition intensities due to four different mechanisms were calculated based on the earlier theoretical studies of Harris, Berlinsky, and $Hardy.^{3}$ A discussion on the detailed analysis based on symmetry considerations, intensities calculations, and the new observations of the dependence of polarization of the infrared radiation on the intensities will be presented. en_US dc.format.extent 138277 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title ANALYSIS OF THE NEAREST NEIGHBORING (nn) O-$H_{2}$ PAIR TRANSITIONS IN THE FUNDAMENTAL Q-BRANCH OF SOLID HYDROGEN: GROUP THEORY AND INTENSITY CALCULATIONS en_US dc.type article en_US