Decay of a Resonance in 18Ne by the Simultaneous Emission of Two Protons

Phys. Rev. Lett. 86, 43 – Published 1 January 2001
J. Gómez del Campo, A. Galindo-Uribarri, J. R. Beene, C. J. Gross, J. F. Liang, M. L. Halbert, D. W. Stracener, D. Shapira, R. L. Varner, E. Chavez-Lomeli, and M. E. Ortiz


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 (Jπ=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.


  • Received 10 July 2000
  • Published in the issue dated 1 January 2001

© 2001 The American Physical Society

Authors & Affiliations

J. Gómez del Campo1, A. Galindo-Uribarri1, J. R. Beene1, C. J. Gross1,2, J. F. Liang1, M. L. Halbert1, D. W. Stracener1, D. Shapira1, R. L. Varner1, E. Chavez-Lomeli3, and M. E. Ortiz3

  • 1Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
  • 2Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee 37831
  • 3Instituto de Física, Universidad Nacional Autónoma de México, México 01000 D.F., México

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