Table 1. Description of the Major Radionuclidic Impurities Present on the Irradiated natCa Target.
isotope | decay mode | T1/2 (h) | measured impurities at EoB (%)b | calculated impurities 8 h after EoB (%)c |
---|---|---|---|---|
43Sc | β+ (88.1%) | 3.89 | 2.57 ± 0.33 | 2.39 |
44mSc | IT (98.8%)a | 58.6 | 0.57 ± 0.06 | 2.01 |
47Sc | β– (100%) | 80.4 | 0.76 ± 0.08 | 2.59 |
48Sc | β– (100%) | 43.7 | 0.38 ± 0.05 | 1.46 |
44Sc purity | 95.72% | 91.56% |
IT: isomeric transition, typical of metastable isotopes.
Radionuclinic impurities at EoB are expressed as mean ± SD (n = 6).
Eight hour impurity levels were calculated from the initial mean values and using the exponential decay equation.