Table 3 Some elemental ratios for NIST 612 glass
Elemental ratio | Initial 30 s | Reduction interval (60 s) | Final 30 s | |
|---|---|---|---|---|
238U/232Th | Avg | 1.05 | 1.02 | 1.02 |
SD | 0.08 | 0.02 | 0.04 | |
RSD (%) | 7.62 | 2.09 | 3.60 | |
139La/172Yb | Avg | 1.31 | 1.25 | 1.26 |
SD | 0.25 | 0.04 | 0.05 | |
RSD (%) | 19.13 | 3.26 | 3.77 | |
93Nb/89Y | Avg | 0.82 | 0.82 | 0.82 |
SD | 0.08 | 0.03 | 0.03 | |
RSD (%) | 9.84 | 3.18 | 3.43 | |
85Rb/89Y | Avg | 0.52 | 0.53 | 0.52 |
SD | 0.03 | 0.01 | 0.02 | |
RSD (%) | 5.79 | 2.83 | 3.75 | |
90Zr/178Hf | Avg | 0.85 | 0.86 | 0.87 |
SD | 0.07 | 0.04 | 0.04 | |
RSD (%) | 8.33 | 4.18 | 4.34 | |
90Zr/89Y | Avg | 0.52 | 0.50 | 0.50 |
SD | 0.09 | 0.02 | 0.02 | |
RSD (%) | 18.19 | 3.12 | 3.39 | |