Measurementof the transition probability in calcium |
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| Authors: | N Beverini E Maccioni F Sorrentino V Baraulia M Coca |
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| Institution: | (1) Istituto Nazionale per la Fisica della Materia and Dipartimento di Fisica “E. Fermi”, via F. Buonarroti 2, 56127 Pisa, Italy, IT;(2) Institute of Laser Physics, Russian Academy of Sciences, Pr. Lavrenteva 13/3, 630090 Novosibirsk, Russia, RU |
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| Abstract: | We have measured the ratio between the transition probabilities of two forbidden lines in Ca: the intercombination line at
657.3 nm and the E
2 line at 457.5 nm. The value we obtained for this ratio is (54.1±2.4). Combined with the most accurate value available in literature for the lifetime of the
3
P
1
level, our measurement gives a value of (54.4±4.0) s-1 for the
1
S
0
↦
1
D
2
transition probability, significantly more accurate than the previous determinations.
Received 17 June 2002 / Received in final form 9 December 2002 Published online 4 March 2003 |
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| Keywords: | PACS 32 30 -r Atomic spectra – 32 70 Cs Oscillator strengths lifetimes transition moments – 42 62 Fi Laser spectroscopy |
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