Collective and quasiparticle structures in 192Pb

A. J.M. Plompen, M. N. Harakeh, W. H.A. Hesselink, G. van 't Hof, N. Kalantar-Nayestanaki, J. P.S. van Schagen, M. P. Carpenter, I. Ahmad, I. G. Bearden, R. V.F. Janssens, T. L. Khoo, T. Lauritsen, Y. Liang, U. Garg, W. Reviol, D. Ye

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34 Scopus citations


The structure of 192Pb has been investigated using the 173Yb(24Mg, 5n) reaction at Eb = 132 MeV. The level scheme has been extended up to an excitation energy of 7 MeV and a spin of 23 h{stroke}. Two collective bands of levels linked by M1 transitions and four groups of states of non-collective character have been observed. Based on comparison with experimental data on odd-A Tl isotopes and with cranked shell-model calculations assuming an oblate shape, the collective Ml bands are interpreted as having an underlying proton 2-quasiparticle configuration coupled to a pair of rotation-aligned i 13 2 neutrons. The four groups of non-collective level-sequences are understood as 4-quasiparticle excitations associated with aligned neutron 2-quasiparticle states that involve a mixture of neutron and proton degrees of freedom.

Original languageEnglish (US)
Pages (from-to)61-87
Number of pages27
JournalNuclear Physics, Section A
Issue number1
StatePublished - Sep 13 1993
Externally publishedYes


  • Nuclear reactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Plompen, A. J. M., Harakeh, M. N., Hesselink, W. H. A., van 't Hof, G., Kalantar-Nayestanaki, N., van Schagen, J. P. S., Carpenter, M. P., Ahmad, I., Bearden, I. G., Janssens, R. V. F., Khoo, T. L., Lauritsen, T., Liang, Y., Garg, U., Reviol, W., & Ye, D. (1993). Collective and quasiparticle structures in 192Pb. Nuclear Physics, Section A, 562(1), 61-87.