Experimental provision

1. Refrigerators for ultralow temperature physical research:

• a refrigerator for nuclear demagnetization of copper (~ 22 moles) for T < 1 mK temperature level;
• a dilution refrigerator with outer circulation (Tmin ~ 15 mK);
• a dilution refrigerator with a condensation-sorption pumping system (Tmin ~ 10 mK);
• a dilution refrigerator with a hybrid circulation system (Tmin ~ 5 mK);
• evaporation refrigerators with 3He (Tmin ~ 0.3 mK).

2. Physical research techniques:

• impulse nuclear magnetic resonance;
• acoustic methods;
• precision barometry;
• non-contact measurement of conductivity of low-dimensional electron systems over liquid helium [V. E. Syvokon, K. A. Nasyedkin, and A. S. Neoneta // Low Temp. Phys. 34, 600 (2008)];
• determination of concentration in superfluid mixtures from permittivity measurements.

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