Zobrazeno 1 - 7
of 7
pro vyhledávání: '"N D Chkhaidze"'
Autor:
V. K. Chagovets, S. E. Kekutia, Norbert Mulders, N. D. Chkhaidze, E. Rudavskii, A. A. Zadorozhko, G. A. Sheshin
Publikováno v:
Journal of Low Temperature Physics. 158:256-261
The velocities of fast and slow collective modes of superfluid He II in 90%, 94% and 98% porosity aerogels were measured by means of low-frequency resonant technique using piezoelectric transducers. The measured temperature dependences of velocities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::630b2d92ec589a88006c1cdb10539e21
https://doi.org/10.1007/s10909-009-0034-5
https://doi.org/10.1007/s10909-009-0034-5
Autor:
G. A. Sheshin, E. Ya. Rudavskii, Sh. E. Kekutia, N. D. Chkhaidze, V. K. Chagovets, Norbert Mulders, A. A. Zadorozhko
Publikováno v:
Low Temperature Physics. 35:752-756
The velocity of fast and slow collective modes of 90, 94 and 98% porosity aerogels filled with superfluid helium were measured by means of low-frequency resonant technique at temperatures 0.5–2.5 K. The temperature dependences of velocities of both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b42acc35a33ebb1a13ba479b90f61ca3
https://doi.org/10.1063/1.3253393
https://doi.org/10.1063/1.3253393
Autor:
Sh. E. Kekutia, N. D. Chkhaidze
Publikováno v:
Low Temperature Physics. 32:621-627
The dynamical equations are obtained for a system comprising a porous material and a He3–He4 superfluid mixture. The elastic coefficients that appear in the equations are expressed in terms of physically measurable quantities. The equations obtaine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f1326e302ebba83388a0aa545519eab
https://doi.org/10.1063/1.2216213
https://doi.org/10.1063/1.2216213
Autor:
N. D. Chkhaidze, Sh. E. Kekutiya
Publikováno v:
Low Temperature Physics. 28:795-802
A theory of the propagation of acoustic waves in a porous medium filled with superfluid helium is developed. The elastic coefficients in the system of equations are expressed in terms of physically measurable quantities. The equations obtained descri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44238cf3e8cd2c59efbb009c1e1626d8
https://doi.org/10.1063/1.1528570
https://doi.org/10.1063/1.1528570
Autor:
Sh. E. Kekutia, N. D. Chkhaidze
Publikováno v:
Low Temperature Physics. 34:165-167
The dynamical equations for superfluid He–A3 filled aerogel in finite magnetic fields are determined. The speeds of propagating longitudinal modes in the A1 and A phases of this system are found. It is shown that sound phenomena in the case of He
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55f41af0b15e832952fbfa147dbcd566
https://doi.org/10.1063/1.2889399
https://doi.org/10.1063/1.2889399
Autor:
Sh. E. Kekutiya, N. D. Chkhaidze
Publikováno v:
Low Temperature Physics. 23:97-100
The reflection and transformation of acoustic waves in 3He-A and 3He-A1 is considered in two cases: (1) at the boundary of a solid impermeable wall for an arbitrary angle of incidence, and (2) for a normal incidence of waves at the interface between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df9e98110002d52b9e3482d7814e2721
https://doi.org/10.1063/1.593466
https://doi.org/10.1063/1.593466
Autor:
Sh E Kekutia, N D Chkhaidze
Publikováno v:
Journal of Statistical Mechanics: Theory and Experiment. 2005:P12008-P12008
A theory of the propagation of acoustic waves in a porous medium filled with superfluid solution is developed. The elastic coefficients in the system of equations are expressed in terms of physically measurable quantities. The equations obtained desc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2233dba934fa5daec07018e189fbba0d
https://doi.org/10.1088/1742-5468/2005/12/p12008
https://doi.org/10.1088/1742-5468/2005/12/p12008