OCTUPOLE EXCITATIONS IN VIBRATIONAL NUCLEI AND THE SDF INTERACTING BOSON MODEL

M PIGNANELLI*, N BLASI, S MICHELETTI, R DELEO, MA HOFSTEE, JM SCHIPPERS, SY VANDERWERF, MN HARAKEH

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

52 Citations (Scopus)

Abstract

Proton and deuteron inelastic scattering experiments, performed with an energy resolution of 12-15 keV, have been used to study negative-parity states of vibrational and transitional nuclei with mass between 98 and 150. The analysis has been focussed on the isovector components, on the quadrupole-octupole two-phonon states and on the fragmentation of the octupole strength. This latter displays a regular dependence on the product of proton and neutron valence particle numbers and is satisfactorily reproduced by IBM-1+f-boson calculations. Other features of the experimental spectra, as the relative positions of the 3- states, exhibit a dependence on the ratio of valence particle numbers and indicate that a IBM-2 approach might be more appropriate.

Original languageEnglish
Pages (from-to)567-601
Number of pages35
JournalNuclear Physics A
Volume519
Issue number3
Publication statusPublished - 10-Dec-1990

Keywords

  • POSSIBLE UNIFIED INTERPRETATION
  • HEAVY-NUCLEI
  • STATES
  • STRENGTH
  • SCATTERING
  • RESONANCE
  • REGIONS
  • CD-112

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