Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry
The results or an experimental study ot the evolution ot the shape ot nonlinear second-sound pulses in superfluid He-II are reported The pulses propagate in the bulk (3D geometry) and along a cryoacoustic waveguide tilled with liquid helium (quasi-ID geometry) at temperatures corresponding to the...
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| Published in: | Физика низких температур |
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| Date: | 1998 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1998
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/176366 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry / V.B. Efimov, G.V. Kolmakov, A.S. Kuliev, L.P. Mezhov-Deglin // Физика низких температур. — 1998. — Т. 24, № 2. — С. 116-121. — Бібліогр.: 10 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
nasplib_isofts_kiev_ua-123456789-176366 |
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Efimov, V.B. Kolmakov, G.V. Kuliev, A.S. Mezhov-Deglin, L.P. 2021-02-04T13:46:37Z 2021-02-04T13:46:37Z 1998 Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry / V.B. Efimov, G.V. Kolmakov, A.S. Kuliev, L.P. Mezhov-Deglin // Физика низких температур. — 1998. — Т. 24, № 2. — С. 116-121. — Бібліогр.: 10 назв. — англ. 0132-6414 PACS: 67.40.Pm https://nasplib.isofts.kiev.ua/handle/123456789/176366 The results or an experimental study ot the evolution ot the shape ot nonlinear second-sound pulses in superfluid He-II are reported The pulses propagate in the bulk (3D geometry) and along a cryoacoustic waveguide tilled with liquid helium (quasi-ID geometry) at temperatures corresponding to the negative, positive, or zero nonlinearity coefficient. A strong dependence of the shape of the propagating pulse on the dimensionality of the wave was observed. The finite size of the heater (generator ot a sound) affects the profile ot a short 3D pulse even at distances many times greater than the heater size, which restricts the minimal width of the excited pulse. The experimental data are compared with the results of numerical simulations. This work was supported in part by INTAS grant #93-3645. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Специальный выпуск International Workshop on Low Temperature Microgravity Physics Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry |
| spellingShingle |
Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry Efimov, V.B. Kolmakov, G.V. Kuliev, A.S. Mezhov-Deglin, L.P. Специальный выпуск International Workshop on Low Temperature Microgravity Physics |
| title_short |
Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry |
| title_full |
Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry |
| title_fullStr |
Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry |
| title_full_unstemmed |
Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry |
| title_sort |
propagation of short, nonlinear, second-sound pulses through he-ii in one- and three-dimensional geometry |
| author |
Efimov, V.B. Kolmakov, G.V. Kuliev, A.S. Mezhov-Deglin, L.P. |
| author_facet |
Efimov, V.B. Kolmakov, G.V. Kuliev, A.S. Mezhov-Deglin, L.P. |
| topic |
Специальный выпуск International Workshop on Low Temperature Microgravity Physics |
| topic_facet |
Специальный выпуск International Workshop on Low Temperature Microgravity Physics |
| publishDate |
1998 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
The results or an experimental study ot the evolution ot the shape ot nonlinear second-sound pulses in superfluid He-II are reported The pulses propagate in the bulk (3D geometry) and along a
cryoacoustic waveguide tilled with liquid helium (quasi-ID geometry) at temperatures corresponding to
the negative, positive, or zero nonlinearity coefficient. A strong dependence of the shape of the
propagating pulse on the dimensionality of the wave was observed. The finite size of the heater
(generator ot a sound) affects the profile ot a short 3D pulse even at distances many times greater than
the heater size, which restricts the minimal width of the excited pulse. The experimental data are
compared with the results of numerical simulations.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/176366 |
| citation_txt |
Propagation of short, nonlinear, second-sound pulses through He-II in one- and three-dimensional geometry / V.B. Efimov, G.V. Kolmakov, A.S. Kuliev, L.P. Mezhov-Deglin // Физика низких температур. — 1998. — Т. 24, № 2. — С. 116-121. — Бібліогр.: 10 назв. — англ. |
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| first_indexed |
2025-12-07T16:06:37Z |
| last_indexed |
2025-12-07T16:06:37Z |
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