Resolving a discrepancy between experimental and theoretical lifetimes in atomic negative ions

Tomas Brage, Jon Grumer

Recently the lifetime of the excited ${}^2{P}_{1/2}$-state of S${}^{-}$ was measured to be $503\pm 54$ s (Bäckström et al. Phys. Rev. Lett. 114, 143003 (2015)). The earlier theoretical l…