Abstract
THE normal mode representation1 of the excitations in liquid helium describes the thermodynamic behaviour below the lambda point as the vibrational modes among a temperature dependent population of diatomic rotors. The excitation spectrum has now been obtained from the theory on the assumption of an observed empirical relation.
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References
Borst, L. B., Nature, 204, 870 (1964).
Henshaw, D. G., and Woods, A. D. B., Phys. Rev., 121, 1270 (1961).
Rayfield, G. W., and Reif, F., Phys. Rev., 136, A, 1194 (1964).
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BORST, L. Dispersion Relation in Liquid Helium. Nature 209, 187–188 (1966). https://doi.org/10.1038/209187a0
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DOI: https://doi.org/10.1038/209187a0
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