Table 1
Intensity ratio of He-like w to H-like Lyα lines of iron.
| Eb (keV) | ![$\[\frac{I_{w}}{I_{L y \alpha_{1}}}\]$](/articles/aa/full_html/2025/08/aa54332-25/aa54332-25-eq9.png) |
![$\[\frac{I_{w}^{\text {Corr. }}}{I_{L y \alpha_{1}}^{\text {Corr. }}}\]$](/articles/aa/full_html/2025/08/aa54332-25/aa54332-25-eq10.png) |
![$\[\frac{I_{w}}{I_{L y \alpha_{2}}}\]$](/articles/aa/full_html/2025/08/aa54332-25/aa54332-25-eq11.png) |
![$\[\frac{I_{w}^{\text {Corr.}}}{I_{L y \alpha_{2}}^{\text {Corr.}}}\]$](/articles/aa/full_html/2025/08/aa54332-25/aa54332-25-eq12.png) |
|---|---|---|---|---|
| 9.10(1) | 25.1(17) | 23.6(23) | 53.8(54) | 49.1(60) |
| 9.39(1) | 11.7(7) | 11.1(10) | 22.9(19) | 21.1(23) |
| 9.89(1) | 6.9(3) | 6.5(5) | 15.0(10) | 13.9(13) |
| 11.90(1) | 3.2(1) | 3.0(2) | 6.9(4) | 6.4(6) |
| 17.92(1) | 2.1(1) | 2.0(1) | 4.3(3) | 4.1(3) |
Notes. The table shows the experimental intensity ratio between the He-like w and the H-like Lyα lines (Lyα1 and Lyα2) of iron as a function of the electron beam energy. The number in parentheses indicates the beam energy uncertainty in the last digit. The third and fifth columns represent the intensity ratios corrected for radiative cascades and polarization. For the Lyα2 line, the intensity is also corrected for the blended M1 line as described in the text.
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