GARNSWORTHY A, A.B.; REGAN, P.H.; CÁCERES, L.; PIÉTRI, S.; SUN, Y.; RUDOLPH, D.; GÓRSKA, M.; PODOLYÁK, Zs.; STEER, S.J.; HOISCHEN, R.; HEINZ, A.; BECKER, F.; BEDNARCZYK, P.; DOORNENBAL, P.; GEISSEL, H.; GERL, J.; GRAWE, H.; GREBOSZ, J.; KELIC, A.; KOJOUHAROV, I.; KURZ, N.; MONTES, F.; PROKOPOWICZ, W.; SAITO, T.; SCHAFFNER, H.; TACHENOV, S.; WERNER-MALENTO, E.; WOLLERSHEIM, H.J.; BENZONI, G.; BLANK, Bertram; BRANDAU, C.; BRUCE, A.M.; CAMERA, F.; CATFORDA, W.N.; CULLEN, I.J.; DOMBRÁDI, Zs.; ESTEVEZ, E.; GELLETLY, W.; ILIE, G.; JOLIE, J.; JONES, G.A.; JUNGCLAUS, A.; KMIECIK, M.; KONDEV, F.G.; KURTUKIAN NIETO, T.; LALKOVSKI, S.; LIU, Z.; MAJ, A.; MYALSKI, S.; PFÜTZNER, M.; SCHWERTEL, S.; SHIZUMA, T.; SIMONS, A.J.; WALKER, P.M.; WIELANDI, O.; XU, F.R.

doi:10.1016/j.physletb.2008.01.017

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Physics Letters B. 2008, vol. 660, p. 326-330

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The low-lying structures of the self-conjugate (N = Z) nuclei Nb-82(41)41 andTc-86(43)43 have been investigated using isomeric-decay spectroscopy following the projectile fragmentation of a Ag-107 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 Ni-56(28) and Sn-100(50) 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 Nb-82 may be interpreted as an isospin-changing K isomer.< Réduire

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Neutron–proton pairing competition in N = Z nuclei: Metastable state decays in the proton dripline nuclei NB-82(41) and Tc-86(43)

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