In-beam spectroscopic studies of the nucleus 105Cd

High spin spectroscopy and shape evolution inCd105

“…3. The present work verified and confirmed the energy levels in the previously known level schemes [8,12,13] PHYSICAL REVIEW C 91, 024319 (2015) and parities for the known low-lying states were adopted from the previous work [8], and these values along with the measured DCO and polarization values were used as inputs for spin and parity assignments to the newly identified states. The y-ray energies, measured relative intensities, DCO ratios, polarization asymmetry (IPDCO), multipolarities of the observed y-transition, and spin parities of the levels belonging to 105Cd are summarized in Table I.…”

“…The yrast positive-parity band 61 was reported by Jerrestam et al [8] up to spin Jn = (27/2+) and this band was reported to decay from Jn = (27/2+) to (23/2+) through 1293-keV y ray. In this work, we could confirm the states in band 51 up to spin 23/2 h. The 1293-keV transition has been found to be in anticoincidence with 1034-and 902-keV decaying transitions and in coincidence with low-spin 886-, 668-, and 131-keV y-ray transitions.…”

“…The low -spin positive-parity states are confirm ed in this w ork and fit w ell w ith the previous w orks [8,12].…”

“…Since these nuclei lie in a transitional region with two proton holes in high-£2 l# 9 /2 orbital and several neutron particles in low-£2 g7/2, ds/2 , and h n / 2 orbitals, the com peting rotational-vibrational structures are built on the configurations involving these orbitals. For exam ple, system atic study o f 103_l07Cd [1,8,9] isotopes reveals that the yrast negative-parity band structures are developed on vibrational excitation at low spins, w hich evolved into rotational structures that term inate at higher spins. T hese rotational structures are interpreted due to the alignm ent o f the vh n / 2 pair, w hereas the positive-parity bands 'Present address: Department of Physics, University of the Western Cape, Bellville-7535, South Africa and Department of Nuclear Physics, iThemba LABS 7129, South Africa.…”

“…The low -spin sates in 1()5Cd have been reported previously by several groups [10,11], The first identification o f excited negative-parity structures in 105Cd was done by Regan et al [12] using fusion evaporation reaction, and they reported the level structure up to J n = 4 7 /2 " . Later, the positive-parity level structures w ere established by Jerrestam et al [8] w ith several m odifications m ade in negative-parity sequences. The observed band structures w ere discussed based on the spin diabatic surface calculations.…”