Experimental Transition Probabilities for Triplet-Singlet Transitions in Heliumlike Heavy Ions

Abstract

The transition probability of the $1{}_{}{}^1{}_{}{}^{}S_0^{}{}_{}{}^{}-2{}_{}{}^3{}_{}{}^{}P_1^{}{}_{}{}^{}$ transition has been measured in the heliumlike ions ${\mathrm{O}}^{6+}$ and ${\mathrm{N}}^{5+}$. The results are (5.2 ± 1)×${10}^8$ ${\sec }^{-1\mathrm{}}$ and (1.7 ± 0.3)×${10}^8$ ${\sec }^{-1\mathrm{}}$, respectively. They agree well with very recent calculations.