85 citations · 508 across the 32 of their papers we have counts for
4 papers · 1 filter
Layer- and bulk roton excitations of 4He in porous media
V. Apaja, E. Krotscheck
We examine the energetics of bulk and layer-roton excitations of 4He in various porous medial such as aerogel, Geltech, or Vycor, in order to find out what conclusions can be drawn…
Excitations in confined helium
V. Apaja, E. Krotscheck
We design models for helium in matrices like aerogel, Vycor or Geltech from a manifestly microscopic point of view. For that purpose, we calculate the dynamic structure function of…
Scattering of He-3 Atoms from He-4 Surfaces
E. Krotscheck, R. Zillich
We develop a first principles, microscopic theory of impurity atom scattering from inhomogeneous quantum liquids such as adsorbed films, slabs, or clusters of He-4. The theory is b…
Quantum sticking, scattering and transmission of 4He atoms from superfluid 4He surfaces
C. E. Campbell, E. Krotscheck, M. Saarela
We develop a microscopic theory of the scattering, transmission, and sticking of 4He atoms impinging on a superfluid 4He slab at near normal incidence, and inelastic neutron scatte…