Single-particle properties of low-lying resonance levels in 14O have been studied efficiently by utilizing a technique of proton elastic resonance scattering with a 13N secondary beam and a thick proton target. The excitation functions for the 13N + p elastic scattering were measured over a wide energy range of ECM = 0.4 - 3.3 MeV and fitted with an R-matrix calculation. A clear assignment of Jπ = 2- has been made for the level at Ex = 6.767 (11) MeV in 14O for the first time. The excitation functions show a signature of a new 0- level at Ex = 5.71 (2) MeV with Γ = 400 (100) keV. The excitation energies and widths of the 14O levels are discussed in conjunction with the spectroscopic structure of A = 14 nuclei with T = 1.
|ジャーナル||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|出版ステータス||出版済み - 6月 28 2007|
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