Two-Proton Decay Experiments at MSU

نویسندگان

  • M. Thoennessen
  • M. J. Chromik
  • P. G. Thirolf
چکیده

First evidence for direct two-proton radioactivity has been observed in the decay of the first excited state of Ne. The decay is in competition with the -decay back to the ground state of Ne and from the branching ratio the lifetime for the two-proton decay is estimated to be 0.9 ps. The proton-proton angular distribution is statistically not significant to observe any correlations. The first excited state was populated with relativistic Coulomb excitation of the exotic beam of 17 the present reaction 15 Ne is not important for astrophysical purposes two-poton capture reactions on heavier proton rich nuclei can have a large impact on the path of the rp-process.

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تاریخ انتشار 2001