Evidence for α -cluster structure in 21Ne in the first measurement of resonant 17O+α elastic scattering
Abstract
The first study of resonances in 17O+α elastic scattering was carried out using the thick target inverse kinematics method. The data were analyzed in the framework of an R-matrix approach. Many α -cluster states were found in the 21Ne excitation region of the 9-13 MeV excitation energy including the first observation of a broad l =0 state in an odd-even nucleus, which is likely the analog of the broad 0+ at 8 MeV in 20Ne. The observed structure in 21Ne appeared to be strikingly similar to that populated in the resonant 16O+α scattering in 20Ne. The results are also useful for refinement of data on an 17O(α ,n ) reaction important for astrophysics.
- Publication:
-
Physical Review C
- Pub Date:
- December 2019
- DOI:
- 10.1103/PhysRevC.100.062802
- Bibcode:
- 2019PhRvC.100f2802N