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Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a Pb-208 beam

Authors :
Steer, S. J.
Podolyak, Zs.
Pietri, S.
Gorska, M.
Grawe, H.
Maier, K. H.
Regan, P. H.
Rudolph, D.
Garnsworthy, A. B.
Hoischen, R.
Gerl, J.
Wollersheim, H. J.
Becker, F.
Bednarczyk, P.
Caceres, L.
Doornenbal, P.
Geissel, H.
Grebosz, J.
Kelic, A.
Kojouharov, I.
Kurz, N.
Montes, F.
Prokopwicz, W.
Saito, T.
Schaffner, H.
Tashenov, S.
Heinz, A.
Pfuetzner, M.
Kurtukian-Nieto, T.
Benzoni, G.
Jungclaus, A.
Balabanski, D. L.
Bowry, M.
Brandau, C.
Brown, A.
Bruce, A. M.
Catford, W. N.
Cullen, I. J.
Dombradi, Zs.
Estevez, M. E.
Gelletly, W.
Ilie, G.
Jolie, J.
Jones, G. A.
Kmiecik, M.
Kondev, F. G.
Kruecken, R.
Lalkovski, S.
Liu, Z.
Maj, A.
Myalski, S.
Schwertel, S.
Shizuma, T.
Walker, P. M.
Werner-Malento, E.
Wieland, O.
Steer, S. J.
Podolyak, Zs.
Pietri, S.
Gorska, M.
Grawe, H.
Maier, K. H.
Regan, P. H.
Rudolph, D.
Garnsworthy, A. B.
Hoischen, R.
Gerl, J.
Wollersheim, H. J.
Becker, F.
Bednarczyk, P.
Caceres, L.
Doornenbal, P.
Geissel, H.
Grebosz, J.
Kelic, A.
Kojouharov, I.
Kurz, N.
Montes, F.
Prokopwicz, W.
Saito, T.
Schaffner, H.
Tashenov, S.
Heinz, A.
Pfuetzner, M.
Kurtukian-Nieto, T.
Benzoni, G.
Jungclaus, A.
Balabanski, D. L.
Bowry, M.
Brandau, C.
Brown, A.
Bruce, A. M.
Catford, W. N.
Cullen, I. J.
Dombradi, Zs.
Estevez, M. E.
Gelletly, W.
Ilie, G.
Jolie, J.
Jones, G. A.
Kmiecik, M.
Kondev, F. G.
Kruecken, R.
Lalkovski, S.
Liu, Z.
Maj, A.
Myalski, S.
Schwertel, S.
Shizuma, T.
Walker, P. M.
Werner-Malento, E.
Wieland, O.
Publication Year :
2011

Abstract

Heavy neutron-rich nuclei were populated via the fragmentation of a E/A = 1 GeV Pb-208(82) beam. Secondary fragments were separated and identified and subsequently implanted in a passive stopper. By the detection of delayed gamma rays, isomeric decays associated with these nuclei have been identified. A total of 49 isomers were detected, with the majority of them observed for the first time. The newly discovered isomers are in Hg-204,205(80), Au-201,202,204,205(79), Pt-197,203,204(78), Ir-195,199-203(77), Os-193,197-199(76), Re-196(75), W-190,191(74), and Ta-189(73). Possible level schemes are constructed and the structure of the nuclei discussed. To aid the interpretation, shell-model as well as BCS calculations were performed.

Details

Database :
OAIster
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1364949024
Document Type :
Electronic Resource

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