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4) ruthenium radioactive isotopes with their relative short half-life are considered as the second most hazardous gaseous isotopes after iodine-131 in case of release by a nuclear accident. [ 4 ] [ 5 ] [ 6 ] The two most important isotopes of ruthenium in case of nuclear accident are these with the longest half-life: 103 Ru (39.26 days) and 106 ...
A significant amount of zirconium is formed by the fission process; some of this consists of short-lived radionuclides (95 Zr and 97 Zr which decay to molybdenum), while almost 10% of the fission products mixture after years of decay consists of five stable or nearly stable isotopes of zirconium plus 93 Zr with a halflife of 1.53 million years ...
Only fissile isotopes of certain elements have the potential for use in nuclear weapons. For such use, the concentration of fissile isotopes uranium-235 and plutonium-239 in the element used must be sufficiently high.
Pages in category "Isotopes of ruthenium" ... Ruthenium-125 This page was last edited on 29 March 2013, at 21:31 (UTC). Text is available under the Creative ...
After allowing the unstable isotopes of ruthenium to decay, chemical extraction could yield ruthenium for use in all applications of ruthenium. [32] [33] Ruthenium can also be produced by deliberate nuclear transmutation from 99 Tc. Given its relatively long half life, high fission product yield and high chemical mobility in the environment, 99
If the fission occurs in an instant then the ruthenium thus formed will have an activity due to 103 Ru of 109 TBq g −1 and 106 Ru of 1.52 TBq g −1. 103 Ru has a half-life of about 39 days meaning that within 390 days it will have effectively decayed to the only stable isotope of rhodium, 103 Rh, well before any reprocessing is likely to occur.
Of the chemical elements, only 1 element has 10 such stable isotopes, 5 have 7 stable isotopes, 7 have 6 stable isotopes, 11 have 5 stable isotopes, 9 have 4 stable isotopes, 5 have 3 stable isotopes, 16 have 2 stable isotopes, and 26 have 1 stable isotope. [1] Additionally, about 31 nuclides of the naturally occurring elements have unstable ...
The fission ruthenium has a different isotope signature. The level of 100 Ru in the fission product mixture is low because fission produces neutron rich isotopes which subsequently beta decay and 100 Ru would only be produced in appreciable quantities by double beta decay of the very long-lived (half life 7.1 × 10 18 years) molybdenum isotope ...