• Citer

Identification of a new low-lying state in the proton drip line nucleus [Formula Presented]

par Angulo Perez, Carmen ;Schweitzer, Jeffrey S.;Achouri, N. L.;Angélique, Jean Claude;Berthoumieux, Eric;Oliveira Santos, De F.;Himpe, P.;Descouvemont, Pierre ;Tabacaru, Gabriel;Couder, Manoël;Gaelens, Michel;Leleux, Pierre ;Ninane, A.;Vanderbist, Francis ;Davinson, Thomas;Woods, Ph P.J.
Référence Physical review. C. Nuclear physics, 67, 1
Publication Publié, 2003

Article révisé par les pairs

• Détails
• Contenu

Résumé :

The second excited state [Formula Presented] [Formula Presented] of the proton-rich nucleus [Formula Presented] has been observed for the first time using the elastic scattering reaction [Formula Presented] An intense [Formula Presented] [Formula Presented] radioactive beam was produced at the CRC-RIB facility at Louvain-la-Neuve to bombard a polyethylene target. The recoil protons were detected at 20 different angles in the LEDA segmented silicon detector. The resulting elastic scattering cross sections have been analyzed using a global R-matrix fit. We find that the second excited state in [Formula Presented] lies at the center-of-mass energy [Formula Presented] with respect to the [Formula Presented] threshold, and has a proton width [Formula Presented] The Coulomb shift between the [Formula Presented] mirror levels in [Formula Presented] and [Formula Presented] is 0.73 MeV, among the largest values currently observed in light exotic nuclei. © 2003 The American Physical Society.