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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Hernández, E.S.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10980121_v81_n2_p_Hernandez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_10980121_v81_n2_p_Hernandez
record_format dspace
spelling todo:paper_10980121_v81_n2_p_Hernandez2023-10-03T16:06:16Z Hydrodynamical description of long-wavelength density fluctuations of helium in wedges Hernández, E.S. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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.
format JOUR
author Hernández, E.S.
spellingShingle Hernández, E.S.
Hydrodynamical description of long-wavelength density fluctuations of helium in wedges
author_facet Hernández, E.S.
author_sort Hernández, E.S.
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
url http://hdl.handle.net/20.500.12110/paper_10980121_v81_n2_p_Hernandez
work_keys_str_mv AT hernandezes hydrodynamicaldescriptionoflongwavelengthdensityfluctuationsofheliuminwedges
_version_ 1807317003466178560

Ejemplares similares