Mixed-symmetry octupole and hexadecapole excitations in N=52 isotones

¹ Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
² Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520, USA
³ Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
⁴ National Superconducting Cyclotron Laboratory NSCL, Michigan State University, East Lansing, Michigan 48824, USA
⁵ Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
⁶ Fundamental Fysik, Chalmers Tekniska Högskola, SE-41296 Göteborg, Sweden
⁷ University of Richmond, Richmond, Virginia 23173, USA
⁸ National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, RO-77125, Romania
⁹ Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
¹⁰ ExtreMe Matter Institute EMMI and Research Division, GSI, D-64291 Darmstadt, Germany
¹¹ Frankfurt Institute for Advanced Studies FIAS, D-60438 Frankfurt a.M., Germany

^a e-mail: hennig@ikp.uni-koeln.de

Published online: 28 May 2015

Abstract

In addition to the well-established quadrupole mixed-symmetry states, octupole and hexadecapole excitations with mixed-symmetry character have been recently proposed for the N = 52 isotones ⁹²Zr and ⁹⁴Mo. We performed two inelastic proton-scattering experiments to study this kind of excitations in the heaviest stable N = 52 isotone ⁹⁶Ru. From the combined experimental data of both experiments absolute transition strengths were extracted.