Author/Authors :
T. Teranishi، نويسنده , , S. Kubono، نويسنده , , S. Shimoura، نويسنده , , M. Notani، نويسنده , , Y. Yanagisawa، نويسنده , , S. Michimasa، نويسنده , , K. Ue، نويسنده , , H. Iwasaki، نويسنده , , M. Kurokawa، نويسنده , , Y. Satou، نويسنده , , T. Morikawa، نويسنده , , A. Saito، نويسنده , , H. Baba، نويسنده , , J.H. Lee، نويسنده , , C.S. Lee، نويسنده , , Zs. Fulop، نويسنده , , S. Kato، نويسنده ,
Abstract :
Resonance states in 12N were studied by using the resonance elastic scattering of 11C+p with a low-energy radioactive ion beam of 11C at 3.5 MeV/nucleon and a thick (CH2)n target. The 11C beam was separated by a newly installed CNS radioactive ion beam separator (CRIB). The energy spectrum of recoil protons was measured at laboratory scattering angles around θLAB=0° to identify resonance states in 12N. The spin-parity values of Jπ=3− and (2)+ have been determined for the levels at the excitation energies of Ex=3.1 and 3.6 MeV in 12N, respectively, suggesting a small contribution of the 3.1-MeV level to the 11C(p, γ)12N stellar reaction.
Keywords :
Resonance states , Radioactive ion beam , Nuclear astrophysics , Elastic scattering
