. 2014 Jul 15;11(8):2954–2961. doi: 10.1021/mp500343j

Table 1. Description of the Major Radionuclidic Impurities Present on the Irradiated ^natCa Target.

isotope	decay mode	T_1/2 (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.

Table 1. Description of the Major Radionuclidic Impurities Present on the Irradiated natCa Target.