Abstract
The192Hg nucleus was populated in the160Gd(36S, 4n) reaction at a beam energy of E=159 MeV. Emittedγ-rays were detected with the EUROGAM array comprising 43 Compton-suppressed large volume Ge detectors. The level scheme of192Hg has been extended up to an excitation energy of E=10.4 MeV and spin I=34 ħ. Two new structures, made of competing ΔI=1 and ΔI=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 π(i13/2 * h9/2)K=11 andπ (h9/2) 2K=8 , coupled to rotation-aligned quasi-neutron ν(i13/2)n and quasi-proton π(h11/2)2 excitations.
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Hübel, H., Byrne, A.P., Ogaza, S., Stuchbery, A.E., Dracoulis, G.D., Guttormsen, M.: Nucl. Phys. A453, 316 (1986)
Ye, De., Beard, K.B., Garg, U., Janssens, R.V.F., Carpenter, M.P., Ahmad, I., Khoo, T.L., Moore, E.F., Wolfs, F.L.H., Benet, Ph., Grabowski, Z.W., Drigert, M.W.: Nucl. Phys. A537, 207 (1992)
Plompen, A.J.M., Harakeh, M.N., Hesselink, W.H.A., Hof, G. van't, Kalantar-Nayestanaki, N., Schagen, J.P.S. van, Carpenter, M.P., Ahmad, I., Bearden, I.G., Janssens, R.V.F., Khoo, T.L., Lauritsen, T., Liang, Y., Garg, U., Revial, W., Ye, D.: Nucl. Phys. A562, 61 (1993)
Fant, B., Tanner, R.J., Butler, P.A., James, A.N., Jones, G.D., Poynter, R.J., White, C.A., Ying, K.L., Love, D.J.G., Simpson, J., Konnell, K.A.: J. Phys. G17, 319 (1991)
Porquet, M.G., Hannachi, F., Bastin, G., Brindejonc, V., Deloncle, I., Gall, B., Smith, G., Schuck, C., Azaiez, F., Bourgeois, C., Duprat, J., Korichi, A., Perrin, N., Poffé, N., Sergolle, H., Astier, A., Le Coz, Y., Meyer, M., Redon, N., Simpson, J., Sharpey-Schafer, J.F., Joyce, M.J., Beausang, C.M., Wadsworth, R., Clark, R.M.: Proceedings of the International Symposium “Perspectives in Nuclear Structure”, Copenhagen 1993
Clark, R.M., Wadsworth, R., Paul, E.S., Beausang, C.W., Ali, I., Astier, A., Cullen, D.M., Dagnall, P.J., Fallon, P., Joyce, M.J., Meyer, M., Redon, N., Regan, P.H., Nazarewicz, W., Wyss, R.: Phys. Lett. B275, 247 (1992)
Baldsiefen, G., Hübel, H., Mehta, D., Thirumala Rao, B.V., Birkental, U., Frohlingsdorf, G., Neffgen, M., Nenoff, N., Pancholi, S.C., Singh, N., Schmitz, W., Theine, K., Willsau, P., Grawe, H., Heese, J., Kluge, H., Maier, K.H., Schramm, M., Schubart, R., Maier, H.J.: Phys. Lett. B275, 252 (1992)
Clark, R.M., Wadsworth, R., Paul, E.S., Beausang, C.W., Ali, L., Astier, A., Cullen, D.M., Dagnall, P.J., Fallon, P., Joyce, M.J., Meyer, M., Redon, N., Regan, P.H., Sharpey-Schafer, J.F., Nazarewicz, W., Wyss, R.: Z. Phys. A342, 371 (1992)
Kuhnert, A., Stoyer, M.A., Becker, J.A., Henry, E.A., Brinkmann, M.J., Yates, S.W., Wang, T.F., Cizewski, J.A., Stephens, F.S., Deleplanque, M.A., Diamond, R.A., Macchiavelli, A.O., Draper, J.E., Azaiez, F., Kelly, W.H., Korten, W.: Phys. Rev. C46, 133 (1992)
Baldsiefen, G., Hübel, H., Azaiez, F., Bourgeois, C., Hojman, D., Korichi, A., Perrin, N., Sergolle, H.: Z. Phys. A343, 245 (1992)
Wang, T.F., Henry, E.A., Becker, J.A., Kuhnert, A., Stoyer, M.A., Yates, S.W., Brinkman, M.J., Cizewski, J.A., Macchiavelli, A.O., Stephens, F.S., Deleplanque, M.A., Diamond, R.M., Draper, J.E., Azaiez, F., Kelly, W.H., Korten, W., Rubel, E., Akovali, Y.A.: Phys. Rev. Lett.69, 1737 (1992)
Baldsiefen, G., Birkental, U., Hübel, H., Nenoff, N., Thirumala Rao, B.V., Willsau, P., Heese, J., Kluge, H., Maier, K.H., Schubart, R., Frauendorf, S.: Phys. Lett. B298, 54 (1993)
Dagnall, P.J., Beausang, C.W., Fallon, P., Forsyth, P.D., Paul, E.S., Sharpey-Schafer, J.F., Twin, P.J., Ali, I., Cullen, D.M., Joyce, M.J., Smith, G., Wadsworth, R., Clark, R.M., Regan, P.H., Astier, A., Meyer, M., Redon, N.: J. Phys. G19, 465 (1993)
Clark, R.M., Wadsworth, R., Azaiez, F., Beausang, C.W., Bruce, A.M., Dagnall, P.J., Fallon, P., Jones, P.M., Joyce, M.J., Korichi, A., Paul, E.S., Sharpey-Schafer, J.F.: J. Phys. G19, L57 (1993)
Roy, N., Becker, J.A., Henry, E.A., Brinkman, M.J., Stoyer, M.A., Cizewski, J.A., Diamond, R., Deleplanque, M.A., Stephens, F.S., Beausang, C.W., Draper, J.E.: Phys. Rev. C47, R930 (1993)
Cederval, B., Deleplanque, M.A., Azaiez, F., Diamond, R.M., Fallon, P., Korten, W., Lee, I.Y., Macchiavelli, A.O., Oliveira, J.R.B., Stephens, F.S., Kelly, W.H., Vo, D.T., Becker, J.A., Brinkman, M.J., Henry, E.A., Hughes, J.R., Kuhnert, A., Stoyer, M.A., Wang, T.F., Draper, J.E., Duyar, C., Rubel, E., Boer, J. de: Phys. Rev. C47, R2443 (1993)
Bonche, P., Krieger, S.J., Quentin, P., Weiss, M.S., Meyer, J., Meyer, M., Redon, N., Flocard, H., Heenen, P.H.: Nucl. Phys. A500, 308 (1989)
Meyer, M., Redon, N., Quentin, P., Libert, J.: Phys. Rev. C45, 233 (1992)
Le Coz, Y., Meyer, J., Meyer, M., Redon, N.: Proceedings of the International Symposium “Perspectives in Nuclear Structure”, Copenhagen 1993
Dönau, F., Frauendorf, S.: Proceedings of the Conference on High Angular Momentum Properties of Nuclei, Oak Ridge 1982
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We would like to thank the crew and technical staff of the NSF at Daresbury for their help and enthusiasm during the experiments. The EUROGAM project is funded jointly by SERC (U.K.) and IN2P3 (France). Work at Bonn was supported by the Bundesminister für Forschung und Technologie, BRD, under contract 06BN601, at Argonne by the US Dept. of Energy, Nuclear Physics Division, under contract W-31-109-ENG-38. Three of us (M.J.J., R.M.C., S.J.G.) acknowledge receipt of SERC postgraduate studentships. Fellowship from the Graduiertenförderung NRW (P.W.) is also gratefully acknowledged.