2001/01/01 by J. Gómez del Campo, A. Galindo-Uribarri, J. R. Beene +8 · 3 citations
Physics and Astronomy · #Nuclear physics research studies #Atomic and Molecular Physics #Astronomical and nuclear sciences
paper · doi:10.1103/physrevlett.86.43
openalex publication_date 2001/01/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
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 (J^\ensuremathπ\phantom\rule0ex0ex=\phantom\rule0ex0ex1^\ensuremath-) 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\ifmmode±\else\textpm\fi3eV assuming 2He emission and 57\ifmmode±\else\textpm\fi6eV assuming three-body decay. The total width of the 1^\ensuremath- state was measured to be 50\ifmmode±\else\textpm\fi5keV. Several additional resonances that decay by single proton emission were also studied.