Eur. Phys. J. A (2009) 42: 7-12
https://doi.org/10.1140/epja/i2009-10858-6

Regular Article - Experimental Physics

Search for a candidate of the 2⁺ _{1, ms} state in ⁹⁰Mo

Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937, Cologne, Germany

^* e-mail: l.bettermann@ikp.uni-koeln.de

Received: 30 April 2009
Revised: 14 July 2009
Accepted: 9 August 2009
Published online: 27 August 2009

Abstract

A -coincidence experiment on the N = 48 nucleus ⁹⁰Mo was performed to investigate its collective behavior and to compare it with the well-studied N = 52 isotones on the other side of the N = 50 shell gap. Beside four new transitions, a possible candidate for the one-phonon mixed-symmetry state was identified. The experimental results are compared to an IBM-2 calculation. Furthermore, the results are discussed in the context of the evolution of collectivity along the N = 48 compared to the N = 52 isotonic chain.