Abstract
Neutron diffraction measurements and theoretical calculations of the structure factor of liquid Kr are extended to small k values The results show that many-body interaction contributions have an increasing effect on as reaching at least 40% of the measured intensity. Both the phase diagram and the low- structural data of dense Kr turn out to be closely reproduced by the hierarchical reference theory if additional many-body forces are taken into account by an augmented strength of the Axilrod-Teller triple-dipole potential. The experimental density derivative of is also used for a very sensitive test of the theories and interaction models considered here.
- Received 8 June 2000
DOI:https://doi.org/10.1103/PhysRevE.63.052201
©2001 American Physical Society