2-PROTON HIGH-K OBLATE STRUCTURES IN PB-194

M G Porquet, F Hannachi, G Bastin, V Brindejonc, I Deloncle, B Gall, C Schuck, A G Smith, F Azaiez, C Bourgeois, J Duprat, A Korichi, N Perrin, N Poffe, H Sergolle, A Astier, Y Lecoz, M Meyer, N Redon, J SimpsonJ F Sharpeyschafer, M J Joyce, C W Beausang, R Wadsworth, R M Clark

Research output: Contribution to journalArticlepeer-review

Abstract

Two regular dipole gamma-ray cascades have been observed in 194Pb. A comprehensive level scheme related to these structures has been built and first members of rotational bands built on K = 8 and K = 11 two-proton oblate states have been identified. From the excitation energies, spin values, behaviours of the moments of inertia and alignments, and from the comparison with the isotone 192Hg, multiparticle configurations can be attributed to three high-spin structures of 194Pb built respectively on the 4966keV, 4334keV and 6198keV levels: {pi9/2[505]pi13/2[606]}{nui13/2}2, {pi9/2[505]pi13/2[6061}{nuf5/2nui13/2}, {pi9/2[505] pi13/2[606]} {nuf5/2(vi13/2)3}. Within this interpretation, the regular dipole bands correspond to the presence of two or three i13/2 decoupled neutrons.

Original languageEnglish
Pages (from-to)765-773
Number of pages9
JournalJournal of physics g-Nuclear and particle physics
Volume20
Issue number5
Publication statusPublished - May 1994

Keywords

  • HIGH-SPIN STRUCTURE
  • COLLECTIVE OBLATE
  • 1ST OBSERVATION
  • 0+ STATES
  • ISOTOPES
  • BANDS
  • NUCLEI
  • COEXISTENCE
  • REGION

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