SHELL STRUCTURE AND SHAPE COEXISTENCE IN PB-195

B Fant, B Cederwall, J Cederkall, L O Norlin, R Wyss, P Fallon, C W Beausang, P A Butler, J W Roberts, A M Bruce, D M Cullen, S M Mullins, R J Poynter, R Wadsworth, M A Riley, W Korten, M J Piiparinen

Research output: Contribution to journalArticlepeer-review

Abstract

Pb-195 was investigated utilizing the reactions Dy-164(S-36, 5n)Pb-195 and Dy-164(S-34, 3n)Pb-195 at beam energies of 170 and 160MeV respectively. Two new dipole bands which feed into the yrast 25/2(+) state, were found in Pb-195. The connection between the bands and the spherical states was established and thus spins and energies of the involved collective states were determined. The deformation is understood as mainly due to excitations of protons across the Z = 82 shell gap. The observed backbends are interpreted as alignment of i(13/2) neutrons.

Original languageEnglish
Pages (from-to)245-248
Number of pages4
JournalPhysica Scripta
VolumeT56
Publication statusPublished - 1995

Keywords

  • 1ST OBSERVATION
  • PB ISOTOPES
  • MASS REGION
  • BANDS
  • ENERGIES
  • DECAY

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