Strong mirror channel correlations have been observed in the reactions ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}({}_{}{}^6{}_{}{}^{}\mathrm{Li}, p){}_{}{}^{21}{}_{}{}^{}\mathrm{Ne}$ and ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}({}_{}{}^6{}_{}{}^{}\mathrm{Li}, p){}_{}{}^{21}{}_{}{}^{}\mathrm{Na}$. The linear cross correlation coefficient $r$ is found to be of the order of 0.6, indicating a high degree of isospin conservation. For the compound nucleus ${}_{}{}^{22}{}_{}{}^{}\mathrm{Na}$ the isospin mixing matrix element $〈V_c〉$ is estimated to be about 1 keV at $E_x\cong 19$ MeV.

NUCLEAR REACTIONS ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}({}_{}{}^6{}_{}{}^{}\mathrm{Li}, p){}_{}{}^{21}{}_{}{}^{}\mathrm{Ne}$, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}({}_{}{}^6{}_{}{}^{}\mathrm{Li}, n\gamma ){}_{}{}^{21}{}_{}{}^{}\mathrm{Na}$; $E=4.0-8.0\mathrm{}$ MeV; measured $\sigma (E, \theta )$. ${}_{}{}^{22}{}_{}{}^{}\mathrm{Na}$ deduced isospin mixing. Hauser-Feshbach calculations.

• Received 19 January 1983

DOI:https://doi.org/10.1103/PhysRevC.27.2977