Because has such a long half-life, its persistence in materials in the solar system may generate observable variations in the isotopic composition of.
42.
Bruno Pellaud, the IAEA's deputy director-general for safeguards, is suggesting that plutonium could be divided into different categories according to its isotopic composition.
43.
However, they may not accurately reflect values from samples from unusual locations or extraterrestrial objects, which often have more widely variant isotopic compositions.
44.
It is now known from study of the sun and primitive meteorites that the solar system was initially almost homogeneous in isotopic composition.
45.
For the solvent isotope effects to be measurable, a finite fraction of the solvent must have a different isotopic composition than the rest.
46.
The plutonium from ALMR recycled fuel would have an isotopic composition similar to that obtained from other high burnt up spent nuclear fuel sources.
47.
An isotopomer should not be confused with isotopologues, which are chemical species that differ only in the isotopic composition of their molecules or ions.
48.
When fish species were investigated, average hydrogen isotopic composition of proteins was in a large range of 128 0 ~ + 203 0.
49.
Hawkins said that the plutonium in the seized Mox had an isotopic composition of 87 percent plutonium 239, the principal isotope used in making bombs.
50.
In 1999, it was shown that variations in the isotopic composition of oxygen in the sediments at the bottom of the ocean follow Milankovitch theory.
