In anywhere from 2 to 4 fissions per 1000 in a nuclear reactor, a process called ternary fission produces three positively charged fragments (plus neutrons) and the smallest of these may range from so small a charge and mass as a proton (Z=1), to as large a fragment as argon (Z=18).
I alt mellem 2 til 4 fissioner per 1000 i en kerne-reaktor, sker en proces kaldet terniær fission, som frembringer tre positivt ladede brudstykker (plus neutroner) og de mindste af disse kan variere fra en proton (Z=1), til argon (Z=18).