Table 4
Atomic data of the transitions.
| λ (Å) | Transition | E (eV) | log (gf) |  |
α |
|---|---|---|---|---|---|
| 5801.75 | 4p2 P –7s2 S1∕2 |
1.617−3.753 | − 1.605 | – | – |
| 6938.77 | 4p2 P –6s2 S1∕2 |
1.617−3.403 | − 1.252 | 1721 | 0.294 |
| 7698.96 | 4s2 S1∕2 –4p2 P |
0.000−1.610 | − 0.176 | 485 | 0.232 |
| 12522.16 | 4p2 P –5s2 S1∕2 |
1.617−2.607 | − 0.134 | 1260 | 0.183 |
Notes. The broadening of the lines via elastic collisions with hydrogen are represented via σ, the cross-section at the velocity of 104 m s−1, and α, the exponent with which the cross-sectionvaries with velocity (v−α, Anstee & O’Mara 1995), and both σ and α are from Barklem et al. (1998). For the 5801 Å we use the Unsold’s method (Unsold 1955), scaled to a factor of 1.5.
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