On 1f2pNuclei. Gamma Ray Spectroscopy on States in⁶⁵Zn and⁶⁷Zn using^62,64Ni(α,n) Reactions

Abstract

On lf2p nuclei. Gamma ray spectroscopy on states in ESZn and 6 7 Z n using 62t64Ni(x,n) reactions.

Role of theg9/2neutron orbital in the structure ofZnBanerjee1, Sethi2, Mb3 et al. 1994Phys. Rev. C6140View full textAdd to dashboardCite

“…This is in contradiction with the reported [13] p-ray branchings for this state (see Table I The level scheme up to 3.23 MeV in excitation was first reported by Nilsson and Sawa [3] while Neal et al [13] have reported levels extending up to 5.42 MeV. The pp-coincidence relationships observed in this work corroborate the placements of all previously known transitions in the level scheme (Fig.…”

“…The 3227.6 keV state, which was previously proposed to have J & 13/2, is found to decay by a pure quadrupole 1174.1 keV transition, restricting the spin and the parity of the level to 17/2+. Contributions in the yields of the 1174.1 keV p ray due to interferences &om neighboring p-ray lines belonging to ' Ni, reported to be considerably large in the reaction employed in the earlier work [3,13], were found to be small (less than 5%) in this work and have been appropriately accounted for in the analyses. For the 3785.7 8) analyses favor the J assignment of 17/2+, although 13/2+ is not ruled out.…”

“…It is observed (Fig. 2) that the positive-parity states at 1065.6, 2053.5, and 3227.6 keV are more strongly populated in the reaction Cu(4He, pnp) as compared to the reaction s2Ni(4He, n) reported earlier [3].…”

“…As suggested originally by Nilsson and Sawa [3] and from the available experimental data, it appears resonable to expect that the positive-parity high spin states of 6 Zn result &om the coupling of a lg9~2 neutron orbital to the states of the A -1 even core, as in Zn. The marked similarity of these states in Zn and Zn lends further credence to this possibility.…”

High spin rotational bands in 65Zn

“…The low-spin structure of the odd-nucleus Zn has been studied previously using both alpha induced reactions [5,6] and various transfer reactions [7][8][9]. No heavy-ion induced reaction has been attempted to explore the high-spin states for this nucleus.…”