Two proton high spin excitations and dipole bands in 192hg

Y. Le Coz, A. Astier, R. Béraud, R. Duffait, M. Meyer, N. Redon, G. Bastin, I. Deloncle, B. Gall, F. Hannachi, M. Kaci, M. G. Porquet, C. Schiick, F. Azaiez, C. Bourgeois, J. Duprat, A. Korichi, N. Perrin, N. Poffe, H. SergolleC. W. Beausang, S. J. Gale, M. J. Joyce, E. S. Paul, J. F. Sharpey-Schafer, R. M. Clark, K. Hauschild, R. Wadsworth, J. Simpson, M. A. Bentley, G. Smith, H. Hiibel, P. Willsau, G. De France, I. Ahmad, M. Carpenter, R. Henry, R. V.F. Janssens, T. L. Khoo, T. Lauritsen

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The 192Hg nucleus has been produced via the 36S(160Gd, 4n) reaction at a beam energy of 159 MeV. The y-rays have been detected with the multi-detector array EUROGAM phase 1. The level scheme has been extended up to 10.4 MeV excitation energy and spin 34. Two new structures, com-posed of competing A/= 1 and A/= 2 transitions, have been observed and, for the first time in Mercury isotopes, some links with the previously known low-lying states have been established. These experimental results are discussed in terms of mean-field Hartree-Fock plus BCS calculations and the new bands are proposed to originate from deformation-aligned quasi-proton excitations. n(i13 2 * hg 2)K,= n and n(hg2)j, c = 3. coupled to rotation-aligned quasi-neutrons v(/13,)" and quasi-proton n(hn 2)2 excita-tions.

Original languageEnglish
Pages (from-to)234-235
Number of pages2
JournalPhysica Scripta
Issue numberT56
Publication statusPublished - 1 Jan 1995

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