title: Two-proton radioactivity of 45Fe.
abstract: In an experiment at the SISSI-LISE3 facility of GANIL, the decay of the proton drip line nucleus 45Fe has been studied. Fragment-implantation events have been correlated with radioactive decay events in a 16x16 pixel silicon-strip detector. The decay-energy spectrum of 45Fe implants shows a distinct peak at (1.14+/-0.04) MeV with a half-life of T(1/2)=(4.7(+3.4)(-1.4)) ms. None of the events in this peak is in coincidence with beta particles. For a longer correlation interval, daughter decays of the two-proton daughter 43Cr can be observed after 45Fe implantation. The decay energy for 45Fe agrees nicely with several theoretical predictions for two-proton radioactivity.
authors.affiliation: CEN Bordeaux-Gradignan, Le Haut-Vigneau, F-33175 Gradignan Cedex, France.
authors.forename: J
authors.initials: J
authors.lastname: Giovinazzo
authors.forename: B
authors.initials: B
authors.lastname: Blank
authors.forename: M
authors.initials: M
authors.lastname: Chartier
authors.forename: S
authors.initials: S
authors.lastname: Czajkowski
authors.forename: A
authors.initials: A
authors.lastname: Fleury
authors.forename: M J
authors.initials: MJ
authors.lastname: Lopez Jimenez
authors.forename: M S
authors.initials: MS
authors.lastname: Pravikoff
authors.forename: J-C
authors.initials: JC
authors.lastname: Thomas
authors.forename: F
authors.initials: F
authors.lastname: De Oliveira Santos
authors.forename: M
authors.initials: M
authors.lastname: Lewitowicz
authors.forename: V
authors.initials: V
authors.lastname: Maslov
authors.forename: M
authors.initials: M
authors.lastname: Stanoiu
authors.forename: R
authors.initials: R
authors.lastname: Grzywacz
authors.forename: M
authors.initials: M
authors.lastname: Pfützner
authors.forename: C
authors.initials: C
authors.lastname: Borcea
authors.forename: B A
authors.initials: BA
authors.lastname: Brown