The method of collinear laser photoionization of atoms in a modulated fast beam is used to detect the rare isotope (3)He, with high-repetition-rate lasers being applied to improve the detection sensitivity. The method has made it possible to detect (3)He at relative abundances as low as 10(-9).
No takes yet. Share an insight, caveat, or question.
Aseyev et al. (1991) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: