Hyperfine Suppression of $2^3{\mathrm{S}}_1-3^3{\mathrm{P}}_J$ Transitions in ${}^3$He

I. A. Sulai, Qixue Wu, M. Bishof +4

Two anomalously weak transitions within the $2^3{\mathrm{S}}_1-3^3{\mathrm{P}}_J$ manifolds in ${}^3$He have been identified. Their transition strengths are measured to be 1,000 times weak…