Determination of F (ppm) in USGS STM-1 for method validation.
| Reactions utilized for beam current normalization | Prompt γ-ray energy taken (keV) | Experimental value (x1 ± u1) | Certified value (x2 ± u2) | Relative bias (E) (%)
|
Zeta score (z)
|
|---|---|---|---|---|---|
| 181Ta(p,p′γ)181Ta | 110 | 984 ± 49 | 910 ± 50 | 8.1 | 1.0 |
| 197 | 880 ± 40 | 910 ± 50 | −3.3 | −0.5 | |
| 1236 | 1048 ± 52 | 910 ± 50 | 15.2 | 1.9 | |
| 14N(p,p′γ)14N | 110 | 980 ± 39 | 910 ± 50 | 7.7 | 1.1 |
| 197 | 890 ± 27 | 910 ± 50 | −2.2 | −0.4 | |
| 1236 | 1035 ± 41 | 910 ± 50 | 13.7 | 1.9 |