Please cite this article as: Villa, I.M., De Bièvre, P., Holden, N.E., Renne, P.R., IUPAC-IUGS recommendation on the half life of 87 Rb, Geochimica et Cosmochimica Acta (2015), doi: http://dx.
AbstractThe IUPAC-IUGS joint Task Group "Isotopes in Geosciences" recommends a value of (49.61 ± 0.16) Ga for the half life of 87 Rb, corresponding to a decay constant 87 = (1.3972 ± 0.0045) × 10 -11 a -1 .