Mean kinetic energy of helium atoms in fluid 3He and 3He-4He mixtures

Momentum distributions and mean kinetic energies of helium atoms, in pure fluid 3He and 3He-4He mixtures, at T = 2 K and 3He concentrations of x = 0.20 and x = 1.00, are presented. The experimental technique employed is deep inelastic neutron scattering measurements in the eV energy range, with wavevector transfer of typically 100 Å-1