High resolution investigation of resonances in 19F
Abstract
The 18O( p, p) 18O and 18O( p, α) 15N excitation functions were investigated in the energy range Ep = 1.39 to 3.20 MeV by simultaneous observation of protons and α-particles at 135°. Only twelve prominent elastic scattering levels were observed at this angle and at 45°, despite the high experimental resolution (less than 400 eV energy spread). Only one resonance was observed for the proton interaction with 16O under the same conditions. R-matrix expressions for multichannel multilevel cross sections were programmed and used to analyze these data. Three of the resonances were determined to be s-wave and seven d-wave, while only two were found to have odd parity. Spins were assigned to each of these twelve resonances except for one d-wave.
- Publication:
-
Annals of Physics
- Pub Date:
- February 1969
- DOI:
- 10.1016/0003-4916(69)90138-9
- Bibcode:
- 1969AnPhy..51..461S