We have refined and extended an existing technique for determining an atomic transition probability by carefully measuring the transition branching ratio (BR) and excited-state lifetime (τ), with particular attention paid to systematic errors. The technique was applied to the red region of the <sup>238</sup>U I spectrum where little accurate data is presently available. In particular, we find for the 6395.42 Å transition the following values: τ = 607 ± 20 ns, BR = 0.586 ± 0.05, and g <sub>2</sub><i>A</i> = 1.45 × 10<sup>7</sup> ± 1.25 × 10<sup>6</sup>.
© 1978 Optical Society of America
L. A. Hackel and M. C. Rushford, "Lifetime, branching ratio, and absolute transition probability of the 6395.42 Å transition of 238U I," J. Opt. Soc. Am. 68, 1084-1087 (1978)