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A two-proton decay recorded by Optical Time Projection Chamber. A 45Fe ion enters the chamber from the left. The two bright, short tracks are protons of approximately 0.6 MeV. (K Miernik et al. 2007.)
International Journal of High-Energy Physics

A two-proton decay recorded by Optical Time Projection Chamber. A 45Fe ion enters the chamber from the left. The two bright, short tracks are protons of approximately 0.6 MeV. (K Miernik et al. 2007.)