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Calculation of theJ=3 roton spectrum of solid hydrogen and deuterium

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Abstract

A model for collective rotational excitations (rotons) with angular momentumJ=3 in solid ortho-hydrogen and para-deuterium at low temperatures is proposed. The theory is an extension of previous Bloch-type models of librons in orthohydrogen and rotons in para-hydrogen. The present model gives fairly good agreement with the positions and relative intensities of the observed Raman lines. As is the case for the libron spectrum, a discrepancy between theory and experiment is found. Improvements of the theory, which may give better agreement with the observed Raman spectra, are discussed.

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Authors and Affiliations

  1. Department of Physics, Colorado State University, Fort Collins, Colorado

    R. J. Lee, J. C. Raich & R. D. Etters

Authors
  1. R. J. Lee
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  2. J. C. Raich
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  3. R. D. Etters
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Supported by NSF Grant GP-9042.

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Lee, R.J., Raich, J.C. & Etters, R.D. Calculation of theJ=3 roton spectrum of solid hydrogen and deuterium. J Low Temp Phys 2, 255–265 (1970). https://doi.org/10.1007/BF00628180

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  • DOI: https://doi.org/10.1007/BF00628180

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