RECOIL DISTANCE LIFETIME MEASUREMENTS OF STATES IN THE OBLATE DIPOLE BANDS OF PB-197,PB-198

R M Clark, R Wadsworth, H R Andrews, C W Beausang, M Bergstrom, S Clarke, E Dragulescu, T Drake, P J Dagnall, A Galindouribarri, G Hackman, K Hauschild, I M Hibbert, V P Janzen, P M Jones, R W MacLeod, S M Mullins, E S Paul, D C Radford, A SempleJ F Sharpeyschafer, J Simpson, D Ward, G Zwartz

Research output: Contribution to journalArticlepeer-review

Abstract

Lifetimes of states in four of the oblate dipole bands in Pb-197, Pb-198 have been measured with the recoil distance technique. Using all the available data on lifetimes and branching ratios, and assuming pure magnetic dipole transitions, we deduce reduced transition probabilities. The results are consistent with weakly oblate collective structures involving high-K proton configurations coupled to rotationally aligned neutrons. Comparisons are made to the theoretical estimates of the Donau and Frauendorf semi-classical model and the tilted axis cranking (TAC) model.

Original languageEnglish
Pages (from-to)84-92
Number of pages9
JournalPhysical Review C
Volume50
Issue number1
Publication statusPublished - Jul 1994

Keywords

  • COLLECTIVE OBLATE
  • ROTATIONAL BANDS
  • 1ST OBSERVATION
  • PB-196
  • COEXISTENCE
  • NUCLEI

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