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Lifetime of helium metastable spin-states in a helium discharge
The lifetime of a helium 23s1 metastable atom electronic spin-state is measured in helium gas using optical pumping techniques. The metastable atoms are created by an RF electrical discharge. The spin-state lifetime is ...
Extraction of a helium ion beam from an optically polarized helium source gas
Optical pumping techniques can be used to produce nuclear polarization in He3 gas excited by a weak electric discharge. By optically polarizing He3 to a polarization P0 and extracting ions from the gas, the resulting ion ...