Potassium argon method of dating


where λ is the radioactive decay constant of 40 K (approximately x 10 −10 year −1 , corresponding to a half-life of approximately billion years), J is the J-factor (parameter associated with the irradiation process), and R is the 40 Ar*/ 39 Ar ratio. The J factor relates to the fluence of the neutron bombardment during the irradiation process; a denser flow of neutron particles will convert more atoms of 40 K to 40 Ar than a less dense one.


Potassium argon method of dating

Potassium argon method of dating



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