Eur. Phys. J. A (2003) 18: 25-30
https://doi.org/10.1140/epja/i2003-10062-x

OriginalPaper

Evolution of the $\pi g_{9/2} \otimes \nu h_{11/2}$ configuration in the neutron-rich $^{110,112}_{\quad\ \; 45}Rh$ and $^{114,116}_{\quad\ \; 47}Ag$ isotopes

¹ CSNSM, IN2P3-CNRS and Université Paris-Sud, 91405, Orsay, France
² INRNE, BAS, 1784, Sofia, Bulgaria
³ IPNL, IN2P3-CNRS and Université Claude Bernard, 69622, Villeurbanne Cedex, France
⁴ Faculty of Physics, University of Sofia, 1126, Sofia, Bulgaria
⁵ School of Physics and Astronomy, University of Birmingham, B15 2TT, Birmingham, UK
⁶ IReS, IN2P3-CNRS and Université Louis Pasteur, 67037, Strasbourg, France
⁷ CEA/Saclay, DSM/DAPNIA/SPhN, 91191, Gif-sur-Yvette Cedex, France

^* e-mail: porquet@csnsm.in2p3.fr

Abstract

The ^110,112 Rh and ^114,116 Ag nuclei have been produced as fission fragments in the fusion reaction ¹⁸ O+²⁰⁸ Pb at 85 MeV. Their level schemes have been built from gamma-rays detected using the Euroball IV array. High-spin states of these neutron-rich nuclei have been identified for the first time. The yrast structures consist of rotational bands in which the odd proton occupies the $\pi g_{9/2}$ sub-shell and the odd neutron the $\nu h_{11/2}$ sub-shell. The evolution of the $\pi g_{9/2} \otimes \nu h_{11/2}$ band structure is analyzed as a function of the neutron number.