Mainz 2012 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 20: Struktur und Dynamik von Kernen
HK 20.4: Talk
Tuesday, March 20, 2012, 17:30–17:45, P 4
Search for mixed-symmetry states in 98Mo — •Tim Thomas1,2, Volker Werner2, Tan Ahn2, Christian Bernards1,2, Nathan Cooper2, Matthew Hinton2,3, Gabriela Ilie2,4, Jan Jolie1, and Desiree Radeck1 — 1IKP, Universität zu Köln — 2WNSL, Yale University, USA — 3University of Surrey, UK — 4NIPNE, Măgurele-Ilfov, Români
In the framework of the sdf-IBM-2 excited 2+ and 3- mixed-symmetry states are predicted in the molybdenum isotopes [1,2]. Signatures for these states are strong M1 decays to the first excited 2+ state or to the first excited octupole state, respectively. Therefore, the knowledge of multipole mixing ratios is essential. In search for such signatures we investigated 98Mo populated via the reaction 96Zr(α, 2n) at the Wright Nuclear Structure Laboratory. The depopulating γ transitions were detected with the highly efficient Yrast Ball γ spectrometer which allowed for the analysis of the γ γ angular correlation analysis. We present multipole mixing ratios, spins and branching ratios and discuss the results in comparison with neighboring nuclei.
[1] N. A. Smirnova et al., Nucl. Phys. A 678, 235 (2000)
[2] M. Scheck et al., Phys. Rev. C 81, 064305 (2010)