Comparison of superdeformed bands in Zn-61 and Zn-60: Possible evidence for T=0 pairing - art. no. 031305

Yu, CH Baktash, C Dobaczewski, J Cameron, JA Chitu, C Devlin, M Eberth, J Galindo-Uribarri, A Haslip, DS LaFosse, DR Lampman, TJ Lee, IY Lerma, F Macchiavelli, AO Paul, SD Radford, DC Rudolph, D Sarantites, DG Svensson, CE Waddington, JC Wilson, JN

Ch. Yu et al., Comparison of superdeformed bands in Zn-61 and Zn-60: Possible evidence for T=0 pairing - art. no. 031305, PHYS REV C, 6003(3), 1999, pp. 1305

26

INGLESE

Article

Physics

PHYSICAL REVIEW C-NUCLEAR PHYSICS

0556-2813 → ACNP

6003

3

1999

ISI

0556-2813(199909)6003:3<1305:COSBIZ>2.0.ZU;2-B

The yrast superdeformed band in Zn-61 has been established using Si-28(Ar-3 6, 2pn)Zn-61 and Ca-40(Si-29, 2 alpha)Zn-61 fusion-evaporation reactions. T he excitation energy of this band was determined via two transitions that l ink this band to the normally deformed states. Lifetime analysis of this ba nd resulted in a quadrupole moment of Q(t) = 3.0 +/- (0.5)(0.4)e b, which c orresponds to a deformation of beta(2) = 0.50+/-(0.07)(0.06). A comparison of the J((2)) dynamical moments of inertia of the yrast superdeformed band in Zn-61 with those in Zn-60 shows a nearly complete blocking of the observ ed alignment in Zn-60, indicating that T=0 proton-neutron pair correlations may be present in Zn-60. [S0556-2813(99)51109-6].