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Atomic and Molecular Hydrogen Impurities in Liquid 4He

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Abstract

The static properties of a single hydrogen atom and an hydrogen molecule in bulk superfluid 4 He are studied by means of the diffusion Monte Carlo method. The analysis includes atomic hydrogen, deuterium and tritium, and molecular hydrogen and deuterium. Our results, which show some differences with previous variational calculations, are in agreement with the only available experimental data corresponding to atomic deuterium. In contrast to the unbinding presented by the atomic impurities, the molecular ones do bind with energies higher than the chemical potential of pure 4 He.

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  1. epartament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Campus Nord B4-B5, E-08034, Barcelona, Spain

    J. M. Marín, J. Boronat & J. Casulleras

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  1. J. M. Marín
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  2. J. Boronat
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  3. J. Casulleras
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Marín, J.M., Boronat, J. & Casulleras, J. Atomic and Molecular Hydrogen Impurities in Liquid 4He. Journal of Low Temperature Physics 110, 205–211 (1998). https://doi.org/10.1023/A:1022599725388

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