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Promethium-147 is an isotope of promethium with a half-life time of 2.62 years. It is the promethium isotope easiest producable, because it is a product of fission at reactors (the longest living promethium isotope Pm-145 is more difficult to produce).

Promethium 147 is used as source for beta radiation and it can be also used for radioisotope thermoelectric generators (RTG) (energy density approximately 2 watts per gram).

[edit] See also

• Isotopes of promethium