TITLE

Two-Proton Decay Experiments at MSU

AUTHOR(S)
Thoennessen, M.; Chromik, M. J.; Thirolf, P. G.
PUB. DATE
June 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 518 Issue 1, p105
SOURCE TYPE
DOC. TYPE
Article
ABSTRACT
First evidence for direct two-proton radioactivity has been observed in the decay of the first excited state of [sup17]Ne. The decay is in competition with the Î³-decay back to the ground state of [sup17]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 [sup17]Ne. This method can also be used to study the inverse reaction (2p, Î³). Although the present reaction [sup15]O(2p,Î³)[sup17)Ne is not important for astrophysical purposes two-proton capture reactions on heavier proton rich nuclei can have a large impact on the path of the rp-process
ACCESSION #
11816837

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