Published May 1990
| Version v1
Journal article
Elementary excitations of 4He clusters
Creators
- 1. Universitat de les Illes Balears, Palma de Mallorca (Spain)
- 2. Universita di Trento, Povo (Italy)
Description
The elementary excitations of 4He clusters containing N atoms are investigated by solving the equations of the random phase approximation (RPA) with a phenomenological effective interaction. The calculations were done for 40≤N≤728. The effects of the RPA correlations are explicitly discussed. Important deviations from the predictions of the liquid droplet model (LDM) are found up to N≅500 for the breathing compression mode and up to N≅100 for surface excitations. Sum rules for compression and surface excitations are also derived and discussed
Additional details
Publishing Information
- Journal Title
- Journal of Low Temperature Physics
- Journal Volume
- 79
- Journal Issue
- 3-4
- Series
- J. Low Temp. Phys.
- Journal Page Range
- 135-149
- ISSN
- 0022-2291
- CODEN
- JLTPA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22005692
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ALGORITHMS; CLUSTER MODEL; EXCITATION; HELIUM 4; RANDOM PHASE APPROXIMATION; SUM RULES; ULTRALOW TEMPERATURE
- Descriptors DEC
- ENERGY-LEVEL TRANSITIONS; EQUATIONS; EVEN-EVEN NUCLEI; HELIUM ISOTOPES; ISOTOPES; LIGHT NUCLEI; MATHEMATICAL MODELS; NUCLEAR MODELS; NUCLEI; STABLE ISOTOPES