2 PROTON HIGH-SPIN EXCITATIONS AND DIPOLE BANDS IN HG-192

Y Lecoz, N Redon, A Astier, R Beraud, R Duffait, M Meyer, F Hannachi, G Bastin, I Deloncle, B Gall, M Kaci, M G Porquet, C Schuck, F Azaiez, C Bourgeois, J Duprat, A Korichi, N Perrin, N Poffe, H SergolleJ F Sharpeyschafer, C W Beausang, S J Gale, M J Joyce, E S Paul, R M Clark, K Hauschild, R Wadsworth, J Simpson, M A Bentley, A G Smith, H Hubel, P Willsau, G Defrance, I Ahmad, M Carpenter, R Henry, R V F Janssens, T L Khoo, T Lauritsen

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The 192Hg nucleus was populated in the (Gd(S, 4n))-Gd-160-S-36 reaction at a beam energy of E = 159 MeV. Emitted gamma-rays were detected with the EUROGAM array comprising 43 Compton-suppressed large volume Ge detectors. The level scheme of 192Hg has been extended up to an excitation energy of E = 10.4 MeV and spin I = 34 h. Two new structures, made of competing DELTAI = 1 and DELTAI = 2 transitions have been observed and their connexions with the low-lying levels established. Their lowest levels are located at 6.304 MeV and 6.879 MeV excitation energy. The experimental results are compared with mean-field HF + BCS calculations. It is proposed that the new structures originate from deformation-aligned quasi-proton excitations pi(i13/2*h9/2)K = 11 and pi(h9/2)K = 8(2), coupled to rotation-aligned quasi-neutron nu(i13/2)n and quasi-proton pi(h11/2)2 excitations.
    Original languageEnglish
    JournalZeitschrift fuer Physik A. Hadrons and Nuclei
    Volume348
    Issue number2
    Publication statusPublished - 1994

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