A beam-foil study of lifetimes and level excitations in gallium and thallium

Lifetimes have been deduced from beam-foil decay curves for 6GaI terms, 7GaIII terms, 7 Tl I terms, and 2 Tl III terms. The results are compared with numerical Coulomb approximation calculations as well as with previous experimental and theoretical data and discussed. There is generally good agreement between experiment and the numerical Coulomb approximation.