Abstract
The orientational energy eigenvalues and eigenvectors of an isolated pair of ortho-hydrogen molecules are calculated over a range of molar volumes 7.8 cm3/mole≤V≤22.65 cm3/mole. Admixtures of free-rotator basis vectors withJ>1, used in describing the system eigenstates, are shown to provide important contributions to the qualitative structure of the eigenvalue spectrum. On this basis,J=1 is not necessarily a good quantum number. TheJ=3 band is explicitly given, and the effect of high pressures on the system is described.
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Etters, R.D., Kulkarni, N.M. & Raich, J.C. The energy spectrum of isolated ortho-hydrogen molecular pairs. J Low Temp Phys 10, 573–582 (1973). https://doi.org/10.1007/BF00655453
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DOI: https://doi.org/10.1007/BF00655453