Ground State Properties of a 3He Impurity in Liquid 4He Monolayers (Preprint)
Abstract
We present the results of ground-state energies, radial distribution functions, liquid structure functions and effective interactions for a He impurity in a He background in two dimensions. The hypernetted-chain scheme for the system described by a Jastrow-type wavefunction is used, taking into account the triplet correlations and elementary diagrams up to fifth order. Solving the Euler Lagrange equations for the two-body distribution functions, which contain triplet correlation and elementary diagrams, improves the results considerably. Furthermore, as a He impurity is inserted into the He background the ground- state energy increases, but the equilibrium density decreases from 0.0350 A to the -2nd power to 0.0336 A to the -2nd power. The radial distribution function is broadened, while its maximum is lowered and shifted to the right (the direction of increasing radial distance) due to its larger zero-point energy, with therefore less localization of the He particle. The results are compared with Monte Carlo results and other studies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1991
- Accession Number
- ADA239993
Entities
People
- C. I. Um
- S. K. Yoo
- Thomas F. George
Organizations
- Washington State University