Table 1
Atomic parameters of those O vi and Fe xxiv transitions, which contribute to the line absorption of the O vii and Fe xxv triplet lines.
| Ion | λc (Å) | Ec (keV) | Upper energy level | f osc | Arad (s-1) | Aaut (s-1) | Atot (s-1) | ω |
|
|
||||||||
| O vi | 21.7881 | 0.569046 |
|
5.27 × 10-2 | 3.68 × 1011 | 6.98 × 1013 | 7.02 × 1013 | 5.24 × 10-3 |
| O vi | 21.7891 | 0.569020 |
|
2.82 × 10-2 | 3.93 × 1011 | 6.96 × 1013 | 7.00 × 1013 | 5.61 × 10-3 |
| O vi | 22.0189 | 0.563081 |
|
3.85 × 10-1 | 2.64 × 1012 | 8.72 × 1012 | 1.14 × 1013 | 2.32 × 10-1 |
| O vi | 22.0205 | 0.563040 |
|
1.91 × 10-1 | 2.61 × 1012 | 9.57 × 1012 | 1.22 × 1013 | 2.14 × 10-1 |
|
|
||||||||
| Fe xxiv | 1.8563 | 6.6791 |
|
9.80 × 10-4 | 9.51 × 1011 | 1.10 × 1014 | 1.11 × 1014 | 8.57 × 10-3 |
| Fe xxiv | 1.8570 | 6.6764 |
|
9.19 × 10-2 | 1.77 × 1014 | 8.18 × 1013 | 2.59 × 1014 | 6.83 × 10-1 |
| Fe xxiv | 1.8611 | 6.6619 |
|
4.97 × 10-1 | 4.79 × 1014 | 5.80 × 108 | 4.79 × 1014 | 1.00 |
| Fe xxiv | 1.8635 | 6.6535 |
|
1.63 × 10-1 | 3.13 × 1014 | 3.89 × 1013 | 3.52 × 1014 | 8.89 × 10-1 |
| Fe xxiv | 1.8738 | 6.6167 |
|
1.66 × 10-2 | 1.57 × 1013 | 7.23 × 1011 | 1.64 × 1013 | 9.57 × 10-1 |
Notes. λc and Ec are the line-centre wavelength and energy, respectively. Arad, Aaut and Atot are the radiative, autoionisation and total transition probabilities, respectively. The oscillator strength fosc and fluorescence yield ω are dimensionless. For all lines the lower energy level is 1s22s 2S1 / 2.
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