Laser-induced resonant transitions in thev=n−l−1=2 and 3metastable cascades of antiprotonicHe3atoms

Laser-induced resonant transitions in metastable antiprotonic ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ atoms have been found. The observed transitions at wavelengths 593.388±0.001 nm and at 463.947±0.002 nm have been respectively ascribed to the $(n, l)=(38, 34)\to (37, 33)$ and the (36,33)→(35,32) transitions, showing excellent agreements to 50 ppm with recent predictions of Korobov.