Radionuclide Source/Production Route Reference 89Zr Proton irradiation of natural yttrium: 89Y (d, 2n)89Zr a-activation of natural yttrium: 89Y (α, p3n) 89Zr 101 102 90Y β- decay of 90Sr: 90Sr 90Y 103

Table 2: Routes of production of some carrier free radioisotopes of Second Transition Series elements.