https://doi.org/10.1140/epjd/e2003-00058-0
Measurementof the 4s2 1S0 → 4s3d 1D2 transition probability in calcium
1
Istituto Nazionale per la Fisica della Materia and Dipartimento di
Fisica “E. Fermi”,
via F. Buonarroti 2, 56127 Pisa, Italy
2
Institute of Laser Physics, Russian Academy of Sciences, Pr. Lavrenteva 13/3, 630090 Novosibirsk, Russia
Corresponding author: a beverini@df.unipi.it
Received:
17
June
2002
Revised:
9
December
2002
Published online:
4
March
2003
We have measured the ratio between the transition probabilities of two forbidden lines in
Ca: the intercombination line at 657.3 nm and the E2 line at 457.5 nm.
The value we obtained for this ratio is 
.
Combined with the most
accurate value available in literature for the lifetime of the 
level,
our measurement gives a value of 
s-1 for the 
transition probability, significantly more accurate than the previous determinations.
PACS: 32.30.-r – Atomic spectra / 32.70.Cs – Oscillator strengths, lifetimes, transition moments / 42.62.Fi – Laser spectroscopy
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
