Different ions are used as microscopic probes for superfluid helium at temperatures ranging from 1.3 to 2.2 K. The ionic mobilities may provide new insight into the so far not well understood microscopic ion-roton scattering ...

Solid oxygen exists at zero pressure in three crystallographic phases, denoted α, β, γ. Various results have been obtained by neutron scattering in the two disordered β and у phases. Plastic γ-O₂ has a A15 structure with ...

Using the powder x-ray diffraction method, the phase diagrams of the binary systems Ar-Хе, Kr-Xe, and Kr-CO have been studied. The molar volumes of these solutions versus temperature and composition have been determined ...