Spectroscopy of the proton drip line nucleus Na by H(Ne,p)Ne elastic scattering

C. Angulo, P. Descouvemont, M. Couder, M. Gaelens, P. Leleux, A. Ninane, G. Tabacaru, F. Vanderbist, T. Davinson, Ph.J. Woods, J.S. Schweitzer, N.L. Achouri, J.C. Angélique, E. Berthoumieux, F. de Oliveira Santos, P. Himpe

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Abstract / Description of output

We have studied the resonant elastic scattering reaction Ne+p in reverse kinematics, by using the intense (4 × 10 pps) Ne radioactive beam at the Centre de Recherches du Cyclotron RIB facility at Louvain-la-Neuve. The recoil protons were detected at 20 different angles in the LEDA segmented silicon detector. The resulting elastic scattering cross sections have been analysed using the R-matrix method. We have observed for the first time the second excited state (J = 1/2, ℓ = 0) of the proton-rich nucleus Na at the center-of-mass energy E = 1.066 ± 0.003 MeV with a proton width Γ = 101 ± 3 keV. The Coulomb shift between the 1/2 mirror levels in O and Na is 0.73 MeV, among the largest values currently observed in light exotic nuclei.
Original languageEnglish
JournalNuclear Physics A
Issue number1-4
Publication statusPublished - 19 May 2003


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