Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Akira Ikushima"'
Autor:
Akira Ikushima, Kohji Ohbayashi
Publikováno v:
Journal of Low Temperature Physics. 19:449-465
The intensity, correlation, and statistics of Rayleigh-scattered light were measured near the gas-liquid critical point of 3He along the coexistence curve and the critical isochore in the temperature region 10−5 < ¦ɛ¦ < 4 × 10−2 (ɛ ≡ ¦T
Autor:
Kohji Ohbayashi, Akira Ikushima
Publikováno v:
Journal of Low Temperature Physics. 15:33-46
Spectra of Rayleigh-scattered light in4He near the gas-liquid critical point have been measured, using a photon correlation method. Fitting the obtained relaxation times to Kawasaki's expression with background modification, we have obtained along th
Rayleigh light scattering and gravity effects in 3He4He mixtures near the gas-liquid critical point
Publikováno v:
Physics Letters A. 91:309-312
The intensity and the linewidth from Rayleigh light scattering for 3 He 4 He mixtures were measured near the critical point, T c ( X 3 ), along critical isochores. Gravity effects lead to formation of a meniscus at temperatures above T c and will
Publikováno v:
Journal of Low Temperature Physics. 61:155-169
The surface tension of liquid4He was measured by means of surface-wave resonance, and the relative variation showed excellent agreement with that previously obtained by a precise capillary-rise method. The absolute value of the surface tension at abs
Publikováno v:
Journal of Low Temperature Physics. 63:495-506
The surface tension of liquid3He and4He was measured near the gas-liquid critical points in the reduced temperature range 3×10−4
Autor:
Ken-ichi Tozaki, Akira Ikushima
Publikováno v:
Journal of Low Temperature Physics. 32:379-399
Attenuation of first sound has been measured in 4He under saturated vapor pressure near the lambda temperature Tλ at frequencies Ω/2π ranging from 10.2 to 271 MHz. The frequency dependence of the critical part of the attenuation is determined and
Publikováno v:
Journal of Low Temperature Physics. 59:291-304
The surface tension of liquid3He was measured by determining the surface wave velocity in the temperature range from 0.32 to 3.02 K. The decrease of the surface tension from the value at 0 K can be described as 22.3T 2 mdyn/cm up to about 0.9 K and i
Publikováno v:
Journal of Low Temperature Physics. 63:129-137
The surface tension of liquid4He in the neighborhood of the λ transition temperature was measured with very high precision by the surface-wave resonance method. The derivative of the surface tension with respect to temperature decreases by 21.1±0.8
Autor:
Mitsuru Tanaka, Akira Ikushima
Publikováno v:
Journal of Low Temperature Physics. 35:9-23
Effective thermal conductivities in the absence of mass diffusion have been measured near the lambda line of 3He-4He mixtures of up to 33% 3He concentration. The thermal conductivity in the normal phase has a rapidly increasing behavior as the temper
Autor:
Ichiro Hatta, Akira Ikushima
Publikováno v:
Journal of the Physical Society of Japan. 41:558-564
Heat capacity of BaTiO 3 has been measured in the vicinity of the ferroelectric-to-paraelectric transition temperature by using both the crystal grown by the top-seeded solution technique and that grown by the flux method. It is found that the temper