Template:Long-lived_fission_products

Template:Long-lived fission products

More information Nuclide, t1⁄2 ...

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Nuclide	t_1⁄2	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
¹³⁵Cs	1.33	6.9110^{[a 4]}	269	β
⁹³Zr	1.53	5.4575	91	βγ
¹⁰⁷Pd	6.5	1.2499	33	β
¹²⁹I	15.7	0.8410	194	βγ
[a 1] Decay energy is split among β, neutrino, and γ if any. [a 2] Per 65 thermal neutron fissions of ²³⁵U and 35 of ²³⁹Pu. [a 3] Has decay energy 380 keV, but its decay product ¹²⁶Sb has decay energy 3.67 MeV. [a 4] Lower in thermal reactors because ¹³⁵Xe, its predecessor, readily absorbs neutrons.