Other short-lived nuclides of potential cosmochemical significance

Other short-lived nuclides of potential cosmochemical significance 

Carbon-14 P-decays to N with a half-life of 5730 years. This system is a mainstay of archeological research. It is useful in cosmochemistry primarily to determine the cosmic-ray exposure history of meteorites as they transit from their parent bodies to Earth. 

Sodium-22 decays by positron emission and electron capture to 22Ne with a half-life of 

6 years. This nuclide is historically significant because it was inferred to be the source of Ne-E, a neon component thought to consist of pure 22Ne, revealed by stepped heating of acid residues of primitive carbonaceous chondrites (Black and Pepin, 1969). This was the first indisputable evidence that presolar grains existed in meteorites, but the significance of this discovery was not fully appreciated for over a decade. 

Chlorine-36 either P-decays to 36Ar (98.1%) or decays by positron emission or electron 

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