PHENOMENOLOGICAL AND MICROSCOPIC ANALYSIS OF PROPERTIES OF EVEN-EVEN NUCLEI. PART B. COLLECTIVE BEHAVIOUR FROM PARTICLE DYNAMICS.
Abstract
A widening of the applicability of phenomenological models is accompanied by an increase in the number of parameters needed. More fundamental models are then required in order to explain the growing wealth of experimental data. Such models might be classified as semi-phenomenological to distinguish them from more rigorous ones. In addition some attempts to obtain collective coordinates from the particle ones will be briefly described. The aim of these attempts is to provide a foundation both to phenomenological and semiphenomenological models. The large quadrupole moments observed in nuclei with many nucleons outside closed shells have for long been associated with nonspherical mass distributions. Since the common field in which the nucleons move in an independent particle model is built self-consistently from a short-range nucleonnucleon interaction, a non-spherical mass distribution would imply a non-spherical single-particle potential. In actual calculations a common potential of prescribed form is used, generally a harmonic oscillator one. Of course, this potential is probably not more than a good starting approximation to the self-consistent field but this is far more difficult to handle.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1965
- Accession Number
- AD0624028
Entities
People
- C. A. Heras
- Horacio E. Bosch
- S. M. Abecasis