학술논문
Axial and triaxial degrees of freedom in 72Zn
Document Type
article
Author
Hellgartner, S; Mücher, D; Wimmer, K; Bildstein, V; Egido, JL; Gernhäuser, R; Krücken, R; Nowak, AK; Zielińska, M; Bauer, C; Benito, MLL; Bottoni, S; De Witte, H; Elseviers, J; Fedorov, D; Flavigny, F; Illana, A; Klintefjord, M; Kröll, T; Lutter, R; Marsh, B; Orlandi, R; Pakarinen, J; Raabe, R; Rapisarda, E; Reichert, S; Reiter, P; Scheck, M; Seidlitz, M; Siebeck, B; Siesling, E; Steinbach, T; Stora, T; Vermeulen, M; Voulot, D; Warr, N; Wenander, FJC
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Abstract
The unstable N=42 nucleus 72Zn has been studied using multiple safe Coulomb excitation in inverse kinematics. The experiment was performed at the REX-ISOLDE facility at CERN making first use of the silicon detector array C-REX in combination with the γ-ray spectrometer Miniball. The high angular coverage of C-REX allowed to determine the reduced transition strengths for the decay of the yrast 01+, 21+ and 41+ as well as of the 02+ and 22+ states in 72Zn. The quadrupole moments of the 21+, 41+ and 22+ states were extracted. Using model independent quadrupole invariants, the ground state of 72Zn was found to have an average deformation in the γ degree of freedom close to maximum triaxiality. In comparison to experimental data in zinc isotopes with N