Abstract
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 {gamma} radiation or with {beta} 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.
Blank, B;
Giovinazzo, J;
Chartier, M;
Czajkowski, S;
Fleury, A;
Lalleman, A S;
Jimenez, M.J. Lopez;
Pravikoff, M S;
Thomas, J -C;
[1]
Pfuetzner, M;
Grzywacz, R;
Janas, Z;
Kurcewicz, J;
[2]
Badura, E;
Geissel, H;
Grigorenko, L V;
Hellstroem, M;
Mazzocchi, C;
Mukha, I;
Muenzenberg, G
[3]
- CEN Bordeaux-Gradignan, Le Haut-Vigneau, F-33175 Gradignan Cedex (France)
- Institute of Experimental Physics, University of Warsaw, PL-00-681 Warsaw (Poland)
- GSI, Planckstrasse 1, D-64291 Darmstadt (Germany); and others
Citation Formats
Blank, B, Giovinazzo, J, Chartier, M, Czajkowski, S, Fleury, A, Lalleman, A S, Jimenez, M.J. Lopez, Pravikoff, M S, Thomas, J -C, Pfuetzner, M, Grzywacz, R, Janas, Z, Kurcewicz, J, Badura, E, Geissel, H, Grigorenko, L V, Hellstroem, M, Mazzocchi, C, Mukha, I, and Muenzenberg, G.
First observation of two-proton radioactivity of 45Fe.
United States: N. p.,
2003.
Web.
doi:10.1063/1.1556627.
Blank, B, Giovinazzo, J, Chartier, M, Czajkowski, S, Fleury, A, Lalleman, A S, Jimenez, M.J. Lopez, Pravikoff, M S, Thomas, J -C, Pfuetzner, M, Grzywacz, R, Janas, Z, Kurcewicz, J, Badura, E, Geissel, H, Grigorenko, L V, Hellstroem, M, Mazzocchi, C, Mukha, I, & Muenzenberg, G.
First observation of two-proton radioactivity of 45Fe.
United States.
https://doi.org/10.1063/1.1556627
Blank, B, Giovinazzo, J, Chartier, M, Czajkowski, S, Fleury, A, Lalleman, A S, Jimenez, M.J. Lopez, Pravikoff, M S, Thomas, J -C, Pfuetzner, M, Grzywacz, R, Janas, Z, Kurcewicz, J, Badura, E, Geissel, H, Grigorenko, L V, Hellstroem, M, Mazzocchi, C, Mukha, I, and Muenzenberg, G.
2003.
"First observation of two-proton radioactivity of 45Fe."
United States.
https://doi.org/10.1063/1.1556627.
@misc{etde_20621496,
title = {First observation of two-proton radioactivity of 45Fe}
author = {Blank, B, Giovinazzo, J, Chartier, M, Czajkowski, S, Fleury, A, Lalleman, A S, Jimenez, M.J. Lopez, Pravikoff, M S, Thomas, J -C, Pfuetzner, M, Grzywacz, R, Janas, Z, Kurcewicz, J, Badura, E, Geissel, H, Grigorenko, L V, Hellstroem, M, Mazzocchi, C, Mukha, I, and Muenzenberg, G}
abstractNote = {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 {gamma} radiation or with {beta} 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.}
doi = {10.1063/1.1556627}
journal = []
issue = {1}
volume = {656}
journal type = {AC}
place = {United States}
year = {2003}
month = {Mar}
}
title = {First observation of two-proton radioactivity of 45Fe}
author = {Blank, B, Giovinazzo, J, Chartier, M, Czajkowski, S, Fleury, A, Lalleman, A S, Jimenez, M.J. Lopez, Pravikoff, M S, Thomas, J -C, Pfuetzner, M, Grzywacz, R, Janas, Z, Kurcewicz, J, Badura, E, Geissel, H, Grigorenko, L V, Hellstroem, M, Mazzocchi, C, Mukha, I, and Muenzenberg, G}
abstractNote = {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 {gamma} radiation or with {beta} 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.}
doi = {10.1063/1.1556627}
journal = []
issue = {1}
volume = {656}
journal type = {AC}
place = {United States}
year = {2003}
month = {Mar}
}