Spectroscopy of /sup 19/Na by /sup 18/Ne+p elastic scattering at Louvain-la-Neuve
(2003) Second International Symposium on Proton-Emitting Nuclei. PROCON 2003 — Location: Legnaro, Italy (12.February.2003)
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- Abstract
- The second excited state (J/sup pi /=1/2/sup +/, l =0) of the proton-rich nucleus /sup 19/Na has been observed for the first time using the elastic scattering reaction /sup 18/Ne+p in inverse kinematics. An intense (4*10/sup 6/ pps) /sup 18/Ne radioactive beam was produced at the Radioactive Beam 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 analysed using the R-matrix method. We find that the second excited state in /sup 19/Na lies at the center-of-mass energy E/sub c.m./=1.066+/-0.003 MeV with respect to the /sup 18/Ne+p threshold, and has a proton width Gamma /sub p=/101+/-3 keV. The Coulomb shift between the 1/2 /sup +/ mirror levels in /sup 19/O and /sup 19/Na is 0.73 MeV, among the largest values currently observed in light exotic nuclei.
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Angulo, C. (2003). Spectroscopy of /sup 19/Na by /sup 18/Ne+p elastic scattering at Louvain-la-Neuve. AIP Conference Proceedings, p. 217-226.