Template:Long-lived fission products

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Long-lived fission products
Nuclide t1⁄2 Yield Q[a 1] βγ
(Ma) (%)[a 2] (keV)
99Tc 0.211 6.1385 294 β
126Sn 0.230 0.1084 4050[a 3] βγ
79Se 0.327 0.0447 151 β
93Zr 1.53  5.4575 91 βγ
135Cs 2.3   6.9110[a 4] 269 β
107Pd 6.5   1.2499 33 β
129I 15.7   0.8410 194 βγ
  1. ↑ Decay energy is split among β, neutrino, and γ if any.
  2. ↑ Per 65 thermal neutron fissions of 235U and 35 of 239Pu.
  3. ↑ Has decay energy 380 keV, but its decay product 126Sb has decay energy 3.67 MeV.
  4. ↑ Lower in thermal reactors because 135Xe, its predecessor, readily absorbs neutrons.
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