Mixed He3-He4 droplets may acquire angular momentum during their passage through the nozzle of the experimental apparatus, cooling down and undergoing isotopic segregation, developing a He3 crust surrounding a superfluid He4 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 He4 core and the normal-fluid He3 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 He4 core, or with multiply charged vortices.
Rotating mixed He 3 - He 4 nanodroplets
Ancilotto F.Membro del Collaboration Group
;
2020
Abstract
Mixed He3-He4 droplets may acquire angular momentum during their passage through the nozzle of the experimental apparatus, cooling down and undergoing isotopic segregation, developing a He3 crust surrounding a superfluid He4 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 He4 core and the normal-fluid He3 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 He4 core, or with multiply charged vortices.Pubblicazioni consigliate
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