Atomic accelerator dating
Such non-equilibrium alignment of spins is a temporary condition, and is called hyperpolarization.The process of hyperpolarizing the xenon is called optical pumping (although the process is different from pumping a laser).He inferred that this was a decay product of radioactive iodine-129.
The iodine–xenon method of dating gives the time elapsed between nucleosynthesis and the condensation of a solid object from the solar nebula. Reynolds discovered that certain meteorites contained an isotopic anomaly in the form of an overabundance of xenon-129.
By additional fractional distillation, the liquid oxygen may be enriched to contain 0.1–0.2% of a krypton/xenon mixture, which is extracted either by absorption onto silica gel or by distillation.
Finally, the krypton/xenon mixture may be separated into krypton and xenon by further distillation.
Xenon is obtained commercially as a by-product of the separation of air into oxygen and nitrogen.
After this separation, generally performed by fractional distillation in a double-column plant, the liquid oxygen produced will contain small quantities of krypton and xenon.