Experimental g factor and B(E2) value of the 41+ state in Coulomb-excited Zn66 compared to shell-model predictions

The g factor of the 4₁⁺ state in Zn66 has been measured for the first time employing the technique of projectile Coulomb excitation in inverse kinematics combined with transient magnetic fields. The lifetime of this state, τ(4₁⁺)=1.1(2) ps, which has been remeasured by the Doppler shift attenuation method, is twice as large as a previously determined value. Both the deduced B(E2;4₁⁺→2₁⁺)=133(24) e²fm⁴ and the g factor of the 4₁⁺ state, g(4₁⁺)=+0.65(20), were interpreted, together with results for the 2₁⁺ state, in the framework of shell-model calculations based on a Ni56 closed-shell core. The present results are also compared with those for neighboring Zn64 and Zn68 that were obtained in previous measurements by the same technique.