Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Norbert Mulders"'
Publikováno v:
Journal of Low Temperature Physics. 162:226-232
We present results of pulse NMR investigations of superfluid A-like phase of 3He in stretched aerogel. In this case we have anisotropic orbital glass (OG) with two possible types of ordering in spin space—ordered spin nematic (OG-SN) or disordered
Autor:
Grigory Volovik, A. N. Yudin, A. A. Senin, Norbert Mulders, Vladimir V. Dmitriev, D. A. Krasnikhin
Publikováno v:
JETP Letters. 91:599-606
Glass states of superfluid A-like phase of 3He in aerogel induced by random orientations of aerogel strands are investigated theoretically and experimentally. In anisotropic aerogel with stretching deformation two glass phases are observed. Both phas
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
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
Autor:
B. H. Moon, Miguel Gonzalez, Y. Lee, Mark W. Meisel, P. Bhupathi, Norbert Mulders, N. Masuhara
Publikováno v:
Journal of Low Temperature Physics. 158:170-175
Longitudinal ultrasound attenuation of superfluid 3He in 98% aerogel has been measured at 33 bar and 6.22 MHz in the presence of magnetic fields up to 4.44 kG. The A-like to B-like (A-B like) phase transition in aerogel was identified by a rounded ju
Publikováno v:
JETP Letters. 88:244-248
Silicon oxide aerogel samples irradiated with x rays at room temperature have been analyzed using the electron paramagnetic resonance method. It has been found that three types of paramagnetic centers appear: paramagnetic centers with a g factor of 2
Autor:
M. S. Tagirov, V. V. Kuzmin, K. R. Safiullin, Norbert Mulders, Dmitrii Tayurskii, A. V. Klochkov
Publikováno v:
JETP Letters. 88:823-827
The spin kinetics of 3He in an aerogel has been studied above the Fermi temperature. The magnetic relaxation times T1 and T2 of adsorbed, gaseous, and liquid 3He in a 95% silica aerogel at a temperature of 1.5 K have been determined as functions of f
Publikováno v:
JETP Letters. 86:594-599
It is found that the properties of nuclear magnetic resonance of both superfluid phases of 3He in an anisotropic aerogel can be described in terms of the bulk superfluid order parameters with the orbital order parameter vector fixed by anisotropy of
Publikováno v:
Journal of Low Temperature Physics. 150:505-510
Longitudinal sound wave propagation in 90% porous silica aerogel filled with superfluid He II and dilute mixture of 3He in 4He has been studied using a low frequency resonance method. The observed fast mode was identified as a mode intermediate betwe
Publikováno v:
Journal of Low Temperature Physics. 148:609-613
We have performed longitudinal ultrasound (9.5 MHz) attenuation and sound velocity measurements in the normal state of liquid 3He in 98% aerogel. The absolute attenuation and sound velocity were determined by direct propagation of sound pulses throug