Triaxiality near the $^{110}$Ru ground state from Coulomb excitation

D. Doherty 1, * J. Allmond 2 R. Janssens 3 W. Korten 1 S. Zhu 3 M. Zielinska 1 D. Radford 2 A. Ayangeakaa 3 B. Bucher 4 J. Batchelder 5 W. Beausang 6 C. Campbell 7 M. Carpenter 3 D. Cline 8 H.L. Crawford 9 M. David 3 J. Delaroche 10 C. Dickerson 3 P. Fallon 7 A. Galindo-Uribarri 2 G. Kondev 11, 3 J.L. Harker 3 A. Hayes 8 M. Hendricks 3 P. Humby 6 M. Girod 10 J. Gross 2 M. Klintefjord 2 K. Kolos 12 J. Lane 13 T. Lauritsen 3 J. Libert 10 A. Macchiavelli 7 J. Napiorkowski 14 E. Padilla-Rodal 15 R. Pardo 3 W. Reviol 16 D. Sarantites 16 G. Savard 3 D. Seweryniak 3 J. Srebrny 14 R. Varner 2 R. Vondrasek 3 A. Wiens 7 E. Wilson 6 J.L. Wood 17 C.Y. Wu 4
Abstract : A multi-step Coulomb excitation measurement with the GRETINA and CHICO2 detector arrays was carried out with a 430-MeV beam of the neutron-rich $^{110}$Ru (t$_{1/2}$= 12 s) isotope produced at the CARIBU facility. This represents the first successful measurement following the post-acceleration of an unstable isotope of a refractory element. The reduced transition probabilities obtained for levels near the ground state provide strong evidence for a triaxial shape; a conclusion confirmed by comparisons with the results of beyond-mean-field and triaxial rotor model calculations.
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D. Doherty, J. Allmond, R. Janssens, W. Korten, S. Zhu, et al.. Triaxiality near the $^{110}$Ru ground state from Coulomb excitation. Physics Letters B, Elsevier, 2017, 766, pp.334 - 338. ⟨10.1016/j.physletb.2017.01.031⟩. ⟨cea-01538529⟩

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