Velocity of sound at very low temperatures

Aversive quality of low velocity winds at various ambient temperatures.

Gas-phase reactions and energy transfer at very low temperatures.

Experimental studies of gas-phase chemical reactions and molecular energy transfer at very low temperatures and between electrically neutral species are reviewed. Although work of collisionally induced vibrational and rotational transfer is described, emphasis is placed on very recent results on the rates of free radical reactions obtained by applying the pulsed laser photolysis (PLP)-laser-ind...

Coulomb effects in granular materials at not very low temperatures

Coulomb effects in granular materials at not very low temperatures. Abstract We consider effects of Coulomb interaction in a granular normal metal at not very low temperatures suppressing weak localization effects. In this limit calculations with the initial electron Hamiltonian are reduced to integrations over a phase variable with an effective action, which can be considered as a bosonization...

Quantum Turbulence at Very Low Temperatures: Status and Prospects

The theory of how turbulent energy decays via a Richardson cascade is well-established for classical fluids, and it also seems to apply to the case of so-called co-flowing He II turbulence in the range from the superfluid transition temperature 7\ down to ~1 K, where its behaviour is similar to that of a classical fluid. For pure superfluids, e.g. He II in the mK range or He-B in the jiK range,...

NMR at Very Low Temperatures: Population Difference Thermometry

Low temperature physicists have employed magnetic resonance techniques to study the fundamental properties of materials at very low temperatures from the earliest days following the discovery of NMR. Many of the familiar degrees of freedom such as phonons and vacancy propagation are frozen out at temperatures below a few degrees Kelvin and magnetic resonance provides one of the most powerful me...