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Characteristic X-ray energies and mean free path.
| Fluorescent target | Si | Zn | Ga | As | Cd | Te | I | Hg |
|---|---|---|---|---|---|---|---|---|
| Atomic number (Z) | 14 | 30 | 31 | 33 | 48 | 52 | 53 | 80 |
| Kα (keV) | 1.7 | 8.6 | 9.2 | 10.5 | 23.1 | 27.3 | 28.4 | 69.8 |
| MFL for Kα (μm) | – | ~6.5 | ~50 | ~55 | ~75 | ~55 | ~91 | ~15747 |
| Kβ (keV) | 1.8 | 9.6 | 10.3 | 11.7 | 26.1 | 31.0 | 32.6 | 80.0 |
| MFL for Kβ (μm) | – | ~12 | ~55 | ~21 | ~55 | ~86 | ~118 | ~37606 |
