First observation of two-proton radioactivity of $^{45}$Fe - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Conference Papers Year : 2003

First observation of two-proton radioactivity of $^{45}$Fe

M. Pfutzner
  • Function : Author
E. Badura
  • Function : Author
C. Bingham
B.A. Brown
  • Function : Author
M. Chartier
  • Function : Author
H. Geissel
  • Function : Author
L.V. Grigorenko
  • Function : Author
R. Grzywacz
  • Function : Author
M. Hellstrom
  • Function : Author
Z. Janas
  • Function : Author
J. Kurcewicz
  • Function : Author
A.S. Lalleman
  • Function : Author
M.J. Lopez Jimenez
  • Function : Author
V. Maslov
  • Function : Author
C. Mazzocchi
  • Function : Author
I. Mukha
  • Function : Author
G. Munzenberg
  • Function : Author
C. Plettner
  • Function : Author
M.S. Pravikoff
  • Function : Author
E. Roeckl
  • Function : Author
K.P. Rykaczewski
  • Function : Author
K. Schmidt
R.S. Simon
  • Function : Author

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 of45Fe 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.
No file

Dates and versions

in2p3-00020067 , version 1 (04-09-2003)

Identifiers

Cite

Bertram Blank, M. Pfutzner, J. Giovinazzo, E. Badura, C. Bingham, et al.. First observation of two-proton radioactivity of $^{45}$Fe. Conference on Frontiers of Nuclear Structure, Jul 2002, Berkeley, United States. pp.83-90, ⟨10.1063/1.1556627⟩. ⟨in2p3-00020067⟩
19 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More