Coulomb excitation of {sub 28}{sup 68}Ni{sub 40} at 'safe' energies

The B(E2;0{sup +}{yields}2{sup +}) value in {sup 68}Ni has been measured using Coulomb excitation at safe energies. The {sup 68}Ni radioactive beam was postaccelerated at the CERN on-line isotope mass separator (ISOLDE) facility to 2.9 MeV/u and directed to a {sup 108}Pd target. The emitted {gamma} rays were detected by the MINIBALL detector array. Not only directly registered but also indirectly deduced information on the nucleus emitting the {gamma} ray was used to perform the Doppler correction, leading to a larger center-of-mass angular range to infer the excitation cross section. The obtained value of 2.8{sub -1.0}{sup +1.2}x10{sup 2}e{sup 2} fm{sup 4} is in good agreement with the value measured at intermediate energy Coulomb excitation, confirming the low 0{sup +}{yields}2{sup +} transition probability.