TY - JOUR
T1 - High-spin structure of the neutron-rich odd-odd 106,108 45Rh and 110,112 47Ag isotopes
AU - Porquet, M. G.
AU - Venkova, Ts
AU - Petkov, P.
AU - Bauchet, A.
AU - Deloncle, I.
AU - Astier, A.
AU - Buforn, N.
AU - Duprat, J.
AU - Gall, B. J.P.
AU - Gautherin, C.
AU - Gueorguieva, E.
AU - Hoellinger, F.
AU - Kutsarova, T.
AU - Lucas, R.
AU - Meyer, M.
AU - Minkova, A.
AU - Redon, N.
AU - Schulz, N.
AU - Sergolle, H.
AU - Wilson, A.
PY - 2002/12
Y1 - 2002/12
N2 - The 106,108Rh and 110,112Ag nuclei have been produced as fission fragments following the fusion reaction 28Si + 176Yb at 145 MeV bombarding energy and studied with the Eurogam2 array. The yrast high-spin states of these four odd-odd nuclei, which are observed for the first time, consist of rotational bands in which the odd proton occupies the πg9/2 subshell and the odd neutron the vh11/2 subshell. Their behaviour as a function of spin values does not vary with the number of neutrons: as observed in the odd-N neighbouring nuclei, the motion of the odd neutron remains decoupled from the motion of the core, from N = 61 to N = 65. Moreover, the staggering observed in the yrast bands of odd-odd isotopes is strongly reduced as compared to the large values displayed by the rotational bands built on the πg9/2 subshell in the odd- A Rh and Ag isotopes. The results of particle-rotor calculations indicate that this reduction is related to a change of the core deformation.
AB - The 106,108Rh and 110,112Ag nuclei have been produced as fission fragments following the fusion reaction 28Si + 176Yb at 145 MeV bombarding energy and studied with the Eurogam2 array. The yrast high-spin states of these four odd-odd nuclei, which are observed for the first time, consist of rotational bands in which the odd proton occupies the πg9/2 subshell and the odd neutron the vh11/2 subshell. Their behaviour as a function of spin values does not vary with the number of neutrons: as observed in the odd-N neighbouring nuclei, the motion of the odd neutron remains decoupled from the motion of the core, from N = 61 to N = 65. Moreover, the staggering observed in the yrast bands of odd-odd isotopes is strongly reduced as compared to the large values displayed by the rotational bands built on the πg9/2 subshell in the odd- A Rh and Ag isotopes. The results of particle-rotor calculations indicate that this reduction is related to a change of the core deformation.
UR - http://www.scopus.com/inward/record.url?scp=0036990543&partnerID=8YFLogxK
U2 - 10.1140/epja/i2001-10269-9
DO - 10.1140/epja/i2001-10269-9
M3 - Article
SN - 1434-6001
VL - 15
SP - 463
EP - 470
JO - European Physical Journal A
JF - European Physical Journal A
IS - 4
ER -