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X-Ray Form Factor, Attenuation, and Scattering Tables, Table 2. Estimated Uncertainties for Elements
| Regions of energy within tabulated region 0.001 eV to 1 MeV | Estimated typical uncertainty | ||
|---|---|---|---|
| f2, [μ/ρ]PE and μPE Monatomic Gases | f2, [μ/ρ]PE and μPE Solids, Liquid | f′ f1 - Z * | |
| Below 200 eV [correlations, phonons] | 50 % to 100 % [32] | 100 % to 200 % [32] | 50 % to 100 % [32] |
| 200 eV to 500 eV | 20 % to 30 % [32] | 50 % to 100 % [32] | 20 % to 50 % [32] |
| 500 eV to 1 keV | 3 % to 10 % [32] | 5 % to 20 % [32] | 5 % to 15 % |
| Near edges (within 0.1 %) | 20 % to 30 % | 50 % | 50 % to 100 % |
| Near K edges (within 10 %) | 10 % | 10 % to 20 % | 30 % |
| Near K edges (1.1 < E/EK < 1.2) | 3 % | 3 % | 10 % |
| Well above K edges (E/EK > 1.2) | 1 % | 1 % | 1 % to 2 % |
| Near LI, MI - MIII edges (within 15 %) | 15 % | 15 % to 30 % | 30 % |
| Near LI, MI - MIII edges (1.15 < E/Eedge < 1.4) | 4 % | 4 % | 10 % |
| Well above LI, MI - MIII edges (E/Eedge > 1.4) | 1 % | 1 % | 1 % to 2 % |
| Near LII/III, MIV/V edges (within 15 %) | 20 % | 20 % to 40 % | 30 % |
| Near LII/III, MIV - MV edges (1.15 < E/Eedge < 1.4) | 4 % | 4 % | 10 % |
| Well above LII/III, MIV - MV edges (E/Eedge > 1.4) | 1 % | 1 % | 1 % to 2 % |
| Above 200 keV (see also section 5 and section 8.9) | 2 % to 3 % | 2 % to 3 % | 1 % to 2 % |
| * See section 9. The section and reference numbers refer to numbers within the Chantler 2000 paper. | |||
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Created March 10, 2026, Updated May 29, 2026