The half-life of 87Rb.
The half-life of 87Rb was measured by a liquid scintillation method according to the efficiency tracing method. The measuring sample of rubidium chloride was dissolved in a scintillation cocktail of Insta-gel, and the rubidium was determined by gravimetry as tetraphenylborate. The result was (5.56 +/- 0.025) x 10(10) years.
D006207:Half-Life; D011868:Radioisotopes / Q000032:analysis*; D012413:Rubidium / Q000032:analysis*; D012588:Scintillation Counting / Q000379:methods*
D011868:Radioisotopes; D012413:Rubidium