TABLE 1

Positron-Emitting Isotopes of Zinc

Parent nucleus	Decay mode^*	Daughter nucleus	T_1/2	Mean β⁺ energy (MeV)	Total β⁺ intensity	High-energy emissions (MeV)^†
⁶²Zn	EC, β⁺	⁶²Cu (T_1/2, 9.7 m)	9.26 h	0.259	8.4	0.508 (15%), 0.55 (15%), 0.60 (26%)
⁶³Zn	EC, β⁺	⁶³Cu (stable)	38.47 m	0.992	92.7	0.67 (8%), 0.96 (7%)
⁶⁵Zn	EC, β⁺	⁶⁵Cu (stable)	243.9 d	0.1425	1.42	1.11 (50.6%)

↵* Electron capture.
↵† Data in parentheses are intensity percentages.