. 2023 Aug 8;3(5):389–417. doi: 10.1021/acsbiomedchemau.3c00021

Table 2. Properties of Selected Zirconium Isotopes^a.

Isotope	t_1/2	I_γ	E_γ	I_ec	I_β+	E_max_(β+)	E_ave(β+)
⁸⁶Zr	16.5 h	100%	241 keV
⁸⁸Zr	83.4 d	100%	390 keV
⁸⁹Zr	78.4 h	100%	909 keV	76.6%	22.3%	897 keV	397 keV

t_1/2 is the half-life of the radioisotopes; I_γ and E_γ refer to the intensity and energy of the γ emission, respectively; IEC denotes the intensity of the electron capture decay; I_β+ is the intensity of the positron emission decay, and E_max(β+) and E_ave(β+) designate the maximum and average energies of the decay by positron emission, respectively.⁴⁹.

Table 2. Properties of Selected Zirconium Isotopesa.

Table 2. Properties of Selected Zirconium Isotopes^a.