Angular Correlation in the ReactionF19(p,α)O16*(γ)O16

Abstract

The angular correlation of alpha-particles and gamma-rays from the 340-kev resonance in the reaction ${\mathrm{F}}^{19}(p,\alpha ){\mathrm{O}}^{16*}\left(\gamma \right){\mathrm{O}}^{16}$ has been observed. This correlation is very strong and allows a unique identification with a correlation calculated for this transition by the method of Hamilton. If we assume even parity and zero spin for the ground state of ${\mathrm{O}}^{16}$, even parity and spin ½ for the ground state of ${\mathrm{F}}^{19}$, this experiment allows the following assignments of spin and parity: 13.24-Mev excited state of ${\mathrm{Ne}}^{20}$, spin 1, even parity; 6.14-Mev excited state of ${\mathrm{O}}^{16}$, spin 3, odd parity. Since no pairs have been observed from this resonance reaction, we can also assign even parity to the 6.0-Mev pair producing state of ${\mathrm{O}}^{16}$.