G. C. Marsden, E. A. Den Hartog, J. E. Lawler, J. T. Dakin, and V. D. Roberts, "Radiative lifetimes of even- and odd-parity levels in Sc i and Sc ii," J. Opt. Soc. Am. B 5, 606-613 (1988)
Time-resolved laser-induced fluorescence on atomic and ionic beams is used to measure radiative lifetimes for 77 odd- and even-parity levels of Sc i and Sc ii. Time-of-flight selection of slow scandium atoms is demonstrated to minimize a systematic error in long lifetimes, an error that arises because atoms escape from the observing region before radiating. High-lying even-parity levels in Sc i and Sc ii are excited by using two-step laser excitation.
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The numbers in parentheses represent an absolute uncertainty in the last digits of the entry.
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Table 6
Comparison of Various Measurements and Calculations of Lifetimes (in Nanoseconds) for Even-Parity Sc i Levels
The numbers in parentheses represent an absolute uncertainty in the last digits of the entry.
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Table 8
Comparison of Various Measurements and Calculations of Lifetimes (in Nanoseconds) for Even-Parity Sc ii Levels
The numbers in parentheses represent an absolute uncertainty in the last digits of the entry.
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Table 6
Comparison of Various Measurements and Calculations of Lifetimes (in Nanoseconds) for Even-Parity Sc i Levels
The numbers in parentheses represent an absolute uncertainty in the last digits of the entry.
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Table 8
Comparison of Various Measurements and Calculations of Lifetimes (in Nanoseconds) for Even-Parity Sc ii Levels
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