241 citations · 565 across the 11 of their papers we have counts for
11 papers
Helium-4 Glass Phase: a Model for Liquid Elements
Robert F. Tournier, Jacques Bossy
The specific heat of liquid helium confined under pressure in nanoporous material and the formation, in these conditions, of a glass phase accompanied by latent heat are known. The…
Experimental study of ultracold neutron production in pressurized superfluid helium
P. Schmidt-Wellenburg, J. Bossy, E. Farhi +5
We have investigated experimentally the pressure dependence of the production of ultracold neutrons (UCN) in superfluid helium in the range from saturated vapor pressure to 20bar.…
Excitations of amorphous solid helium
Jacques Bossy, Jacques Ollivier, Helmut Schober +1
We present neutron scattering measurements of the dynamic structure factor, , of amorphous solid helium confined in 47 pore diameter MCM-41 at pressure 48.6 bar. At low…
New excitations in bcc He - an inelastic neutron scattering study
O. Pelleg, J. Bossy, E. Farhi +3
We report neutron scattering measurements on bcc solid % He. We studied the phonon branches and the recently discovered ''optic-like'' branch along the main crystalline direc…
Observation of Macroscopic Structural Fluctuations in bcc Solid 4He
O. Pelleg, M. Shay, S. G. Lipson +6
We report neutron diffraction studies of low density bcc and hcp solid 4He. In the bcc phase, we observed a continuous dynamical behaviour involving macroscopic structural changes…
Observation of a new excitation in bcc solid 4He by inelastic neutron scattering
T. Markovich, E. Polturak, J. Bossy +1
We report neutron scattering measurements of the phonons in bcc solid 4He. In general, only 3 accoustic phonon branches should exist in a monoatomic cubic crystal. In addition to t…