Two-proton radioactivity — a curiosity of nature?

Abstract In the present paper, we describe recent results on two-proton mission studies. In the first part, new results on two proton emission from excited states in 17 Ne are presented. In these complete kinematics measurements performed at the SPEG facility of GANIL, the angle between the two proton has been measured evidencing a 2 He emission pattern. In a second part, recent results on the two-proton radioactivity of 45 Fe from GANIL and GSI are presented, which show the first evidence of this new radioactivity.