The spdf IBA Analytical Description of Odd Parity States in the Actinide Region

✍ Scribed by A.F. Diallo; B.R. Barrett; P. Navrátil; C. Gorrichategui

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 213 KB
• Volume: 279
• Category: Article
• ISSN: 0003-4916
• DOI: 10.1006/aphy.1999.5976

✦ Synopsis

An extension of the IBA 1Â4 asymptotic scheme to the description of odd parity states via the introduction of odd l bosons in the condensate is presented. The new features that are thereby introduced into the system are highlighted and the advantages of using such an approach are discussed. A standard minimization routine is used to determine the structure coefficients for the wavefunctions of the system and to obtain a fit to the spectra and the electromagnetic transition rates of 11 nuclei in the actinide region with a rather small number of variable parameters, namely the single-particle energies and the multipole interaction strengths. Reasonable results are obtained and are compared to the results of exact numerical calculations and earlier 1ÂN calculations.