title: Decay of a Resonance in 18Ne by the Simultaneous Emission of Two Protons.
abstract: Radioactive ion beams of 17F were used to study several resonance states in 18Ne. Clear evidence for simultaneous two-proton emission from the 6.15 MeV state (Jpi = 1(-)) in 18Ne has been observed with the reaction 17F+1H. Because of limited angular coverage, the data did not differentiate between the two possible mechanisms of simultaneous decay, diproton (2He) emission or direct three-body decay. The two-proton partial width was found to be 21+/-3 eV assuming 2He emission and 57+/-6 eV assuming three-body decay. The total width of the 1(-) state was measured to be 50+/-5 keV. Several additional resonances that decay by single proton emission were also studied.
authors.affiliation: Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831.
authors.lastname: Gómez Del Campo J
authors.initials: A
authors.lastname: Galindo-Uribarri
authors.initials: JR
authors.lastname: Beene
authors.initials: CJ
authors.lastname: Gross
authors.initials: JF
authors.lastname: Liang
authors.initials: ML
authors.lastname: Halbert
authors.initials: DW
authors.lastname: Stracener
authors.initials: D
authors.lastname: Shapira
authors.initials: RL
authors.lastname: Varner
authors.initials: E
authors.lastname: Chavez-Lomeli
authors.initials: ME
authors.lastname: Ortiz