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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/199406
Nanoscopic jets and filaments of superfluid He-4 at zero temperature: a DFT study
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The instability of a cryogenic 4He jet exiting through a small nozzle into vacuum leads to the formation of 4He drops, which are considered ideal matrices for spectroscopic studies of embedded atoms and molecules. Here, we present a He-density functional theory (DFT) description of droplet formation resulting from jet breaking and contraction of superfluid 4He filaments. Whereas the fragmentation of long jets closely follows the predictions of linear theory for inviscid fluids, leading to droplet trains interspersed with smaller satellite droplets, the contraction of filaments with an aspect ratio larger than a threshold value leads to the nucleation of vortex rings, which hinder their breakup into droplets.
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ANCILOTTO, Francesco, BARRANCO GÓMEZ, Manuel and PI PERICAY, Martí. Nanoscopic jets and filaments of superfluid He-4 at zero temperature: a DFT study. Journal of Chemical Physics. 2023. Vol. 158, num. 1-13. ISSN 0021-9606. [consulted: 13 of June of 2026]. Available at: https://hdl.handle.net/2445/199406