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NMR characterization of phase separation in highly polarized3He-4He solutions above 450 mK

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Abstract

Laser optical pumping techniques have been successfully applied to concentrated3He-4He gaseous mixtures. Using a3He cryostat, these mixtures were subsequently liquefied and studied down to 450 mK, using pulsed NMR techniques.

Observation of highly nuclear polarized solutions and of phase separation (demixion) in the mixtures is reported. Measurements of magnetic relaxation times and the dynamics of coexisting phases in this system are discussed.

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References

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Authors and Affiliations

  1. Département de Physique de l'E.N.S., Laboratoire de Spectroscopie Hertzienne, Paris, France

    G. Tastevin

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  1. G. Tastevin
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Unité de Recherche de l'Ecole Normale Supérieure et de l'Université Pierre et Marie Curie, associée au C.N.R.S. (URA18)

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Tastevin, G. NMR characterization of phase separation in highly polarized3He-4He solutions above 450 mK. J Low Temp Phys 89, 317–324 (1992). https://doi.org/10.1007/BF00692604

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  • DOI: https://doi.org/10.1007/BF00692604

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