used to power some spacecraft. Plutonium isotopes are expensive and inconvenient to separate, so particular isotopes are usually manufactured in specialized...

been tested. Plutonium-238, curium-242, curium-244 and strontium-90 have been used. Besides the nuclear properties of the used isotope, there are also...

4.5 billion years for different isotopes, making them useful for dating the age of the Earth. The most common isotopes in natural uranium are uranium-238...

of plutonium had fissioned (a fizzle). A higher-velocity gun was suggested but found to be impractical. The possibility of separating the isotopes was...

of isotopes of stable atoms. Thomson's device was a crude version of the instrument we now term a mass spectrometer. Neon has three stable isotopes: 20Ne...

americium, plutonium, zirconium, and iron, so as to recycle long-lived waste isotopes such as neptunium-237 into shorter-lived isotopes more useful as...

concentrations of fissile isotopes in order to sustain a chain reaction. They are also capable of breeding fissile isotopes from fertile materials; a...

PAEC produced the reactor-grade plutonium isotopes, and reprocessed them into weapon-grade. The breakthrough with plutonium experiment was at the PINSTECH...

as a plutonium production plant until January 1945, when it was turned over to research activities, and the production of radioactive isotopes for scientific...

1016/0012-821X(93)90104-H. Lacan, Francois; Jeandel, Catherine (April 2005). "Neodymium isotopes as a new tool for quantifying exchange fluxes at the continent–ocean interface"...