Two-proton radioactivity of ~(45)Fe

摘要

The decay of the extremely neutron-deficient isotope ~(45)Fe has been studied by using a new type of gaseous detector in which a technique of optical imaging is used to record tracks of charged particles. The two-proton radioactivity and the β-decay channels were clearly identified. For the first time, the angular and energy correlations between two protons emitted from the ~(45)Fe ground state were measured. The obtained results were confronted with predictions of a three-body model.