Highly anomalous yrast B(E2) values and vibrational collectivity


Cakirli R. B. , Casten R., Jolie J., Warr N.

PHYSICAL REVIEW C, vol.70, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 70 Issue: 4
  • Publication Date: 2004
  • Doi Number: 10.1103/physrevc.70.047302
  • Title of Journal : PHYSICAL REVIEW C

Abstract

It is shown that the existing yrast B(E2) values [especially the B(E2;4(1)(+)-->2(1)(+))/B(E2;2(1)(+)-->0(1)(+)) ratio] in Ru-98 are highly anomalous and cannot be plausibly interpreted with existing models. A survey of all even-even nuclei from 40less than or equal toZless than or equal to80 shows that this phenomenon is rare in collective nuclei. It occurs to a much lesser extent in Te-114, Xe-114, and possibly a few other nuclides. The combination of vibrational-like energies and nonvibrational B(E2) values perhaps points to a different kind of vibrational behavior.