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Tin-126



Long-lived
fission products
t½(my)Yield%KeVβ
99Tc.2116.0507294
126Sn.230.02364050γ
79Se.295.0508151
93Zr1.536.295691γ
135Cs2.3 6.3333269
107Pd6.5 .162933
129I15.7 .6576194γ

Tin-126 is a radioisotope and one of only 7 long-lived fission products. While tin-126's halflife of 230,000 years translates to a low specific activity that limits its radioactive hazard, its shortlived decay product, antimony-126, emits high-energy gamma radiation, making external exposure to tin-126 a potential concern.

Additional recommended knowledge

126Sn is in the middle of the mass range for fission products. Thermal reactors, which make up almost all current nuclear power plants, produce it at a very low yield (such as 0.0236% or 0.06%), since slow neutrons almost always fission 235U or 239Pu into unequal halves. Fast fission in a fast reactor or nuclear weapon, or fission of some heavy minor actinides like californium, will produce it at higher yields.


See also

  • ANL factsheet
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tin-126". A list of authors is available in Wikipedia.
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