Helium-3 Recovery And Purification
Helium-3 accumulates from decaying tritium and is separated from ordinary helium and other gases before use.
Where recovered helium-3 comes from
Helium-3 in the plant arises as stored or retained tritium decays. It appears mixed with ordinary helium-4 and other light gases and must be separated and purified to be useful. Recovery systems collect these gases and isolate the helium-3 fraction to the purity that end uses require.
Separating the isotopes
Because helium-3 and helium-4 are chemically identical, they are separated by physical means that exploit their small mass difference, similar in spirit to how deuterium is separated from hydrogen. The quantities are small — a design-target class near 1.97 kg/yr per breeder — so the separation plant is correspondingly modest in scale.
- Helium-3 collected from gases as tritium decays
- Separated from helium-4 by mass-based physical methods
- Purified to the level each application requires
- Design-target output near a 1.97 kg/yr class per breeder
Feeding downstream needs
Purified helium-3 can fuel the burner (Aegis / MetroVolt) or supply refrigeration, detection, and imaging uses. Yields are design targets, not measurements. See what bred helium-3 can supply and helium-3 bred in situ.
Small scale, familiar physics
Because the annual helium-3 output is measured in a kilogram-scale class, the separation plant that isolates it from ordinary helium is modest, and it relies on the same mass-based physics used to separate other light isotopes. The task is one of purity and careful collection rather than throughput. The isotope emerges continuously as tritium decays, so recovery is a steady process rather than a batch event.