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Monolayers of 3He on the Surface of Bulk Superfluid 4He

J. P. Warren·C. D. H. Williams
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Abstract

We have used quantum evaporation to investigate the two-dimensional fermion system that forms at the free surface of (initially isotopically pure) 4He when small quantities of 3He are added to it. By measuring the first-arrival times of the evaporated atoms, we have determined that the 3He-3He potential in this system is V_3S/k_B=(0.23+/-0.02) K nm^2 (repulsive) and estimated a value of m_3S=(1.53+/-0.02)m_3 for the zero-coverage effective mass. We have also observed the predicted second layer-state which becomes occupied once the first layer-state density exceeds about 0.6 monolayers.

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J. P. Warren, C. D. H. Williams. 1999-06-17. Monolayers of 3He on the Surface of Bulk Superfluid 4He. https://doi.org/10.1016/s0921-4526(99)02224-3

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