8 citations · 20 across the 5 of their papers we have counts for
5 papers
Performance of adiabatic melting as a method to pursue the lowest possible temperature in He and He-He mixture at the He crystallization pressure
T. S. Riekki, A. P. Sebedash, J. T. Tuoriniemi
We studied a novel cooling method, in which He and He are mixed at the He crystallization pressure at temperatures below . We describe the experimenta…
Thermal conductivity of superfluid He-B in a tubular channel down to 0.1 at the He crystallization pressure
T. S. Riekki, J. T. Tuoriniemi, A. P. Sebedash
We studied the thermal conductivity of superfluid He in a 2.5 mm effective diameter and 0.15 m long channel connecting the two volumes of our experimental assembly. The main vo…
Thermodynamics of adiabatic melting of solid in liquid
T. S. Riekki, A. P. Sebedash, J. T. Tuoriniemi
In the cooling concept by adiabatic melting, solid He is converted to liquid and mixed with He to produce cooling power directly in the liquid phase. This method overco…
Effects of He film on quartz tuning forks in He at ultra-low temperatures
T. S. Riekki, J. Rysti, J. T. Mäkinen +3
In pure superfluid He-B at ultra-low temperatures, quartz tuning fork oscillator response is expected to saturate when the dissipation caused by the superfluid medium becomes s…
Decoupling between first sound and second sound in He - superfluid He mixtures
T. S. Riekki, M. S. Manninen, J. T. Tuoriniemi
Bulk superfluid helium supports two sound modes: first sound is an ordinary pressure wave, while second sound is a temperature wave, unique to inviscid superfluid systems. These so…