First Observation Of Two-Proton Radioactivity Of 45Fe

Details First Observation Of Two-Proton Radioactivity Of 45Fe First Observation Of Two-Proton Radioactivity Of 45Fe

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..656...83b&link_type=abstract

FRONTIERS OF NUCLEAR STRUCTURE. AIP Conference Proceedings, Volume 656, pp. 83-90 (2003).

Physics

2

Decay By Proton Emission, Projectile And Target Fragmentation, 39<=A<=58

Scientific paper

In experiments at the FRS of GSI and at the SISSI-LISE3 facility of GANIL, the decay of the proton drip-line nucleus 45Fe has been studied after projectile fragmentation of a 58Ni primary beam. Fragment-implantation events have been correlated with radioactive decay events in silicon telescopes on an event-by-event basis. The decay-energy spectrum of 45Fe implants shows a distinct peak consistent with a two-proton ground-state decay of 45Fe. None of the events in the peak were found to be in coincidence with γ radiation or with β particles which were searched for in the telescope-surrounding detectors. The decay energy for 45Fe agrees nicely with several theoretical predictions for two-proton emission. These predictions strongly support the observed decay to be a simultaneous two-proton ground-state decay.

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