Zobrazeno 1 - 10
of 163
pro vyhledávání: '"K.W. Taconis"'
Publikováno v:
Physica B+C. 81:91-100
The influence of the roughness of the glass surface on the thickness of the static He-II film is investigated. The changes in the average film thickness are determined from the corresponding changes in the bulk level height in a closed volume filled
Publikováno v:
Physica B+C. 84:334-344
The behaviour of third-sound pulses of long pulselength travelling on a helium of 205 m length is reported. These pulses show very little damping as well as dispersion. Different types of reflections at the ends of the film path have been observed, w
Publikováno v:
Le Journal de Physique Colloques. 39:C6-140
The study of isothermal flow of superfluid helium in a very long capillary has led to the observation of persistent currents.
Publikováno v:
Physica B+C. 84:249-253
Calculations of the lowest temperatures and the temperature gradient in the counterflow capillary of the Leiden dilution refrigerator are given, taking into account the heat conduction and the dissipation of gravitational energy. It appears that in a
Publikováno v:
Le Journal de Physique Colloques. 39:C6-142
Autor:
K.W. Taconis
Publikováno v:
Cryogenics. 18:459-464
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:
Physica. 77:523-531
The mixing chamber of the Leiden alternative dilution refrigerator has been used as a compression cell for Pomeranchuk cooling. A description is given of the construction of this cooling device and its performance. The lowest magnetic temperature rea
Publikováno v:
Physica. 73:621-625
A persistent current in the He-II film is observed in a closed circuit with a length of 136 m. Within the measuring accuracy no decay of the flow is measured up to time intervals of more than 18 hours.
Publikováno v:
Cryogenics. 22:33-38
This paper deals with a special Pomeranchuk cooling device which is used in combination with a He 4 -cycling He 3 -He 4 dilution refrigerator at high pressures. The lowest temperature obtained was 1.1 mK.