The excitation energy of the lowest $1^{+}$, $T=1\mathrm{}$ state in ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$, which is important for parity nonconservation studies, has been determined in a photon scattering experiment to be 11 262.3 ± 1.9 keV. Values for the $\gamma$-ray branching of this level to the ground state and to the first $2^{+}$ level in ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ are 84 ± 5% and 16 ± 5%, respectively.

NUCLEAR REACTIONS ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}(\gamma , \gamma )$, $E_{\gamma }<18\mathrm{}$ MeV, bremsstrahlung; measured $E_{\gamma }$, $\gamma$ branching. Ne natural targets.

• Received 4 October 1982

DOI:https://doi.org/10.1103/PhysRevC.27.2981