Add to ORKGMotivated by the recent discovery that the thickness of a helium film is independent of its state of superflow, we have analysed the conditions under which the two fluid model is consistent with equilibrium between film and vapour. The experimental result is found to be a natural consequence of the requirements for equilibrium. In addition we find that waves in a moving film should be convected at approximately 1/2(ρ_s/ρ) u_s, where u_s is the superfluid velocity. A new criterion for critical velocity is discovered and a new result is obtained for the attenuation of waves
For the thickness of a liquid or solid quantum film, like liquid helium or solid hydrogen, there exi...
It is shown experimentally that the superfluid fraction ρs/ρ is continuous and finite at the point a...
A simple model, commonly used for describing the behavior of the superfluid film is examined, and it...
Motivated by the recent discovery that the thickness of a helium film is independent of its state o...
It has recently been shown experimentally that the thickness of a saturated helium film is independe...
The onset of superfluid flow in thin He II films is discussed on the basis of a recent theoretical m...
The necessary conditions are examined for a film in contact with its own vapor to flow without dissi...
The saturated superfluid film is capable of acting as a siphon, allowing the superfluid to drain out...
We measure the third sound velocity of superfluid helium films as functions of temperature and film ...
Nous avons mesuré le taux de dissipation d'énergie dans l'écoulement d'hélium suprafluide sous forme...
A theoretical explanation is given for the lowering of the transition temperature, and the increase ...
A model for the onset of nonlinear dissipation in AC and DC flows is presented as an extension of t...
This thesis describes three independent investigations of the dynamic properties of the superfluid H...
We have measured the critical ultrasonic attenuation in superfluid helium films at 9 GHz. The critic...
As discussed in the preceding paper by Graham, a controversy has arisen over conflicting reports of ...
For the thickness of a liquid or solid quantum film, like liquid helium or solid hydrogen, there exi...
It is shown experimentally that the superfluid fraction ρs/ρ is continuous and finite at the point a...
A simple model, commonly used for describing the behavior of the superfluid film is examined, and it...
Motivated by the recent discovery that the thickness of a helium film is independent of its state o...
It has recently been shown experimentally that the thickness of a saturated helium film is independe...
The onset of superfluid flow in thin He II films is discussed on the basis of a recent theoretical m...
The necessary conditions are examined for a film in contact with its own vapor to flow without dissi...
The saturated superfluid film is capable of acting as a siphon, allowing the superfluid to drain out...
We measure the third sound velocity of superfluid helium films as functions of temperature and film ...
Nous avons mesuré le taux de dissipation d'énergie dans l'écoulement d'hélium suprafluide sous forme...
A theoretical explanation is given for the lowering of the transition temperature, and the increase ...
A model for the onset of nonlinear dissipation in AC and DC flows is presented as an extension of t...
This thesis describes three independent investigations of the dynamic properties of the superfluid H...
We have measured the critical ultrasonic attenuation in superfluid helium films at 9 GHz. The critic...
As discussed in the preceding paper by Graham, a controversy has arisen over conflicting reports of ...
For the thickness of a liquid or solid quantum film, like liquid helium or solid hydrogen, there exi...
It is shown experimentally that the superfluid fraction ρs/ρ is continuous and finite at the point a...
A simple model, commonly used for describing the behavior of the superfluid film is examined, and it...