Abstract
All the levels are unbound by proton emission. To date the four low-lying levels below 1 MeV have been experimentally identified with well established spin-parity values and excitation energies with an accuracy of 4 – 6 keV. However, there are still considerable discrepancies in their level widths. The present work aims to explore these level widths through an independent method. The angular distributions of the (, ) reaction leading to the first four states in were measured using a high-precision Q3D magnetic spectrograph. The neutron spectroscopic factors and the asymptotic normalization coefficients for these states in were then derived based on distorted wave Born approximation analysis. The proton widths of the four low-lying resonant states in were obtained according to charge symmetry of strong interaction.
- Received 2 February 2014
DOI:https://doi.org/10.1103/PhysRevC.89.054315
©2014 American Physical Society