Zobrazeno 1 - 10
of 24
pro vyhledávání: '"J.F. Olijhoek"'
Publikováno v:
Physica. 72:355-380
In continuation of our investigations on the cooling effect which occurs when He II is forced to flow under adiabatic conditions through a system consisting of a superleak, a chamber and a capillary in series measurements on the flow of He II under h
Publikováno v:
Cryogenics. 15:261-264
This paper deals with the problem: which metallic materials have large heat capacities in the temperature range just above that of liquid helium temperatures? Experimental data are reported on the heat capacity of metallic compounds that are rich in
Publikováno v:
Solid State Communications. 17:1149-1153
Samples of the sulphospinel FeCr 2 S 4 with varying Fe/Cr ratio around the nominal composition have been investigated with Mossbauer spectroscopy. The spectra with the narrowest lines, as well as a γ-type peak in the specific heat-temperature curve
Publikováno v:
Solid State Communications. 35:867-870
The incorporation of helium or neon atoms in vitreous silica generates a temperature-dependent excess specific heat, proportional to the amount of dissolved atoms. Between 0.2 and 1 K this excess is similar to the anomalous specific heat of pure vitr
Publikováno v:
Physica. 72:381-396
Extending previous investigations on the cooling effect, the temperature distribution along a thermally isolated capillary through which He II is forced to flow after having passed through a superleak is measured. The temperature gradient at the entr
Publikováno v:
Physica. 64:289-305
Further experiments are described concerning the cooling effect which occurs when liquid He II is forced to flow through a system consisting of a superleak and fine capillary in series. The nature of this cooling process and the origin of a lower lim
Publikováno v:
Physica. 40:490-496
The critical flow rate of superfluid helium through jeweller's rouge and vycor glass is measured as a function of the temperature. The flow rate is found to be practically independent of the applied pressure head and proportional to the superfluid de
Publikováno v:
Physica. 69:38-48
Experiments on the flow of He II under high overall pressure through a thermally isolated system consisting of a superleak, a chamber and a capillary in series are reported. Depending on the direction of the flow a cooling or a warming up of the cham
Publikováno v:
Physica. 35:483-486
Publikováno v:
Physics Letters. 18:265-266