Year: 2020
Type: article
Abstract: Mixed $^{3}\mathrm{He}\ensuremath{-}^{4}\mathrm{He}$ droplets may acquire angular momentum during their passage through the nozzle of the experimental apparatus, cooling down and undergoing isotopic segregation, developing a $^{3}\mathrm{He}$ crust surrounding a superfluid $^{4}\mathrm{He}$ core. Within density functional theory, we investigate their stability and the relations between their angular momenta and their shapes. We uncover a variety of behaviors where the interplay between the superfluid $^{4}\mathrm{He}$ core and the normal-fluid $^{3}\mathrm{He}$ coating leads to a scenario that both bears analogies with viscous rotating drops and displays new features such as configurations with a fissioned or three-lobed $^{4}\mathrm{He}$ core, or with multiply charged vortices.
Institutions: Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona, Universitat de Barcelona, University of Padua, Istituto Officina dei Materiali, National Interuniversity Consortium for the Physical Sciences of Matter, Université Toulouse III - Paul Sabatier, Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes, Laboratoire Collisions Agrégats Réactivité, Université de Toulouse
Language: Latvian
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W3010160841