William Hayden Smith and Harvey S. Liszt, "Absolute Oscillator Strengths for Some Resonance Multiplets of Ca i,ii, Mg i,ii, B i, and Al i*," J. Opt. Soc. Am. 61, 938-941 (1971)
Radiative-lifetime studies of the more prominent resonance transitions of Ca i,ii, Mg i,ii, B i, and Al i between 1800 and 4250 Å are presented. The results for the lowest member of the resonance series are in good agreement with most previous-literature values obtained with Hanle-effect or beam-foil techniques. Results for the higher members of the resonance series for Mg i and Ca i are compared with previous results. These data are discussed and oscillator strengths are given.
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AT = total absolute transition probability to all lower states.
Uncertainty limits apply to AT, and f values. T = cascading state lifetime in nanoseconds, β = ratio of excitation by cascading to direct excitation.
Assuming a branching ratio between the 2S and 2D lower levels of 17.5:1, see Refs. 5, 17.
Lifetimes (ns).
L. Biermann and K. Lubeck, Z. Astrophys. 25, 325 (1948).
D. R. Bates and A. Damgaard, Proc. Roy. Soc (London) A242, 101 (1949).
J. Bromander, private communication.
Tables (2)
Table I
Mg i,ii, Ca i,ii, Al i, and B i radiative lifetimes and absolute transition probabilities.
AT = total absolute transition probability to all lower states.
Uncertainty limits apply to AT, and f values. T = cascading state lifetime in nanoseconds, β = ratio of excitation by cascading to direct excitation.
Assuming a branching ratio between the 2S and 2D lower levels of 17.5:1, see Refs. 5, 17.
Lifetimes (ns).
L. Biermann and K. Lubeck, Z. Astrophys. 25, 325 (1948).
D. R. Bates and A. Damgaard, Proc. Roy. Soc (London) A242, 101 (1949).
J. Bromander, private communication.