Hydrodynamical description of long-wavelength density fluctuations of helium in wedges

The hydrodynamical model that has proven successful to describe excitations of superfluid helium in the bulk and adsorbed on planar surfaces, cylinders, and spheres is applied to investigate the long-wavelength density fluctuation spectrum of 3He confined to an infinite linear wedge at zero temperat...

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Autor principal: Hernández, Ester Susana
Publicado: 2010
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v81_n2_p_Hernandez
http://hdl.handle.net/20.500.12110/paper_10980121_v81_n2_p_Hernandez
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_10980121_v81_n2_p_Hernandez2023-06-08T16:07:47Z Hydrodynamical description of long-wavelength density fluctuations of helium in wedges Hernández, Ester Susana The hydrodynamical model that has proven successful to describe excitations of superfluid helium in the bulk and adsorbed on planar surfaces, cylinders, and spheres is applied to investigate the long-wavelength density fluctuation spectrum of 3He confined to an infinite linear wedge at zero temperature. It is found that in spite of the breaking of axial symmetry, the velocity potentials and the shape of the meniscus can be described in terms of an orbital quantum number or quasiangular momentum, and that the density wave spectrum is formally similar to that of helium shells adsorbed in a cylindrical pore. As an illustration, the stability of phonon and ripplon modes are discussed in terms of the relevant parameters of helium in a cesium wedge. © 2010 The American Physical Society. Fil:Hernández, E.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v81_n2_p_Hernandez http://hdl.handle.net/20.500.12110/paper_10980121_v81_n2_p_Hernandez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The hydrodynamical model that has proven successful to describe excitations of superfluid helium in the bulk and adsorbed on planar surfaces, cylinders, and spheres is applied to investigate the long-wavelength density fluctuation spectrum of 3He confined to an infinite linear wedge at zero temperature. It is found that in spite of the breaking of axial symmetry, the velocity potentials and the shape of the meniscus can be described in terms of an orbital quantum number or quasiangular momentum, and that the density wave spectrum is formally similar to that of helium shells adsorbed in a cylindrical pore. As an illustration, the stability of phonon and ripplon modes are discussed in terms of the relevant parameters of helium in a cesium wedge. © 2010 The American Physical Society.
author Hernández, Ester Susana
spellingShingle Hernández, Ester Susana
Hydrodynamical description of long-wavelength density fluctuations of helium in wedges
author_facet Hernández, Ester Susana
author_sort Hernández, Ester Susana
title Hydrodynamical description of long-wavelength density fluctuations of helium in wedges
title_short Hydrodynamical description of long-wavelength density fluctuations of helium in wedges
title_full Hydrodynamical description of long-wavelength density fluctuations of helium in wedges
title_fullStr Hydrodynamical description of long-wavelength density fluctuations of helium in wedges
title_full_unstemmed Hydrodynamical description of long-wavelength density fluctuations of helium in wedges
title_sort hydrodynamical description of long-wavelength density fluctuations of helium in wedges
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v81_n2_p_Hernandez
http://hdl.handle.net/20.500.12110/paper_10980121_v81_n2_p_Hernandez
work_keys_str_mv AT hernandezestersusana hydrodynamicaldescriptionoflongwavelengthdensityfluctuationsofheliuminwedges
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