Neutron-proton pairing competition in N = Z nuclei : metastable state decays in the proton dripline nuclei Nb-82(41) and (43TC)-T-86
Articolo
Data di Pubblicazione:
2008
Citazione:
Neutron-proton pairing competition in N = Z nuclei : metastable state decays in the proton dripline nuclei Nb-82(41) and (43TC)-T-86 / A.B. Garnsworthy, P.H. Regan, L. Caceres, S. Pietri, Y. Sun, D. Rudolph, M. Gorska, Z. Podolyak, S.J. Steer, R. Hoischen, A. Heinz, F. Becker, P. Bednarczyk, P. Doornenbal, H. Geissel, J. Gerl, H. Grawe, J. Grecbosz, A. Kelic, I. Kojouharov, N. Kurz, F. Montes, W. Prokopowicz, T. Saito, H. Schaffner, S. Tachenov, E. Werner-Malento, H.J. Wollersheim, G. Benzoni, B.B. Blank, C. Brandau, A.M. Bruce, F. Camera, W.N. Catford, I.J. Cullen, Z. Dombradi, E. Estevez, W. Gelletly, G. Ilie, J. Jolie, G.A. Jones, A. Jungclaus, M. Kmiecik, F.G. Kondev, T. Kurtukian-Nieto, S. Lalkovski, Z. Liu, A. Maj, S. Myalski, M. Pfutzner, S. Schwertel, T. Shizuma, A.J. Simons, P.M. Walker, O. Wieland, F.R. Xu. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 660:4(2008 Feb 28), pp. 326-330. [10.1016/j.physletb.2008.01.017]
Abstract:
The low-lying structures of the self-conjugate (N = Z) nuclei 8241Nb41 and 8643Tc43 have been investigated using isomeric-decay spectroscopy following the projectile fragmentation of a 107Ag beam. These represent the heaviest odd-odd N = Z nuclei in which internal decays have been identified to date. The resulting level schemes shed light on the shape evolution along the N = Z line between the doubly-magic systems 5628Ni and 10050Sn and support a preference for T = 1 states in Tz = 0 odd-odd nuclei at low excitation energies associated with a T = 1 neutron-proton pairing gap. Comparison with Projected Shell Model calculations suggests that the decay in 82Nb may be interpreted as an isospin-changing K isomer.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
A.B. Garnsworthy, P.H. Regan, L. Caceres, S. Pietri, Y. Sun, D. Rudolph, M. Gorska, Z. Podolyak, S.J. Steer, R. Hoischen, A. Heinz, F. Becker, P. Bednarczyk, P. Doornenbal, H. Geissel, J. Gerl, H. Grawe, J. Grecbosz, A. Kelic, I. Kojouharov, N. Kurz, F. Montes, W. Prokopowicz, T. Saito, H. Schaffner, S. Tachenov, E. Werner Malento, H.J. Wollersheim, G. Benzoni, B.B. Blank, C. Brandau, A.M. Bruce, F. Camera, W.N. Catford, I.J. Cullen, Z. Dombradi, E. Estevez, W. Gelletly, G. Ilie, J. Jolie, G.A. Jones, A. Jungclaus, M. Kmiecik, F.G. Kondev, T. Kurtukian Nieto, S. Lalkovski, Z. Liu, A. Maj, S. Myalski, M. Pfutzner, S. Schwertel, T. Shizuma, A.J. Simons, P.M. Walker, O. Wieland, F.R. Xu
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