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Two-proton correlations in the decay of 45Fe
K Miernik1, W Dominik, Z Janas
1Institute of Experimental Physics, Warsaw University, 00-681, Warsaw, Poland.
Abstract:
The decay of extremely neutron-deficient 45Fe has been studied in detail by means of a novel type of a gaseous detector employing digital imaging to record tracks of charged particles. The two-proton radioactivity channel was clearly identified. For the first time, the angular and energy correlations between two protons emitted from the nuclear ground state were determined, indicating the genuine three-body character of this decay. The half-life of 45Fe was found to be 2.6+/-0.2 ms and the observed 2p decay branching ratio is 70+/-4%.
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