Home · Is helium-3 rare?
Question
Is helium-3 rare?
Yes — helium-3 is scarce on Earth and has been in shortage since 2009. Kronos breeds it.
Why it matters
Yes. Helium-3 is extremely scarce on Earth — the federal auction ended in 2009 and supply today is a by-product of tritium decay. Demand keeps rising with quantum computing and neutron detection.
01
No natural supply
There's no significant terrestrial reservoir; it's a decay by-product.
02
Rising demand
Every dilution refrigerator and neutron detector needs it.
03
Kronos breeds it
HYPERION makes helium-3 domestically, independent of the tritium blanket.
Related questions
More answers.
Is helium-3 rare? +
Yes. Helium-3 is very scarce on Earth — the U.S. federal auction ended in 2009 and supply is a by-product of tritium decay. Kronos's HYPERION breeder makes it domestically.
What is helium-3 used for? +
Neutron detection (portal monitors, treaty verification), dilution refrigeration for quantum computers and dark-matter detectors, hyperpolarized lung MRI, and as fusion fuel for Kronos's own generator.
Where does helium-3 come from? +
Today, mostly from tritium decay — a limited by-product. It is also abundant in lunar regolith. Kronos breeds it as a primary product of its D–T breeder.
Verify it yourself
Open by design.
Conceptual design and simulation study; the integrated Kronos machines are not yet built, and certain results are requirement-class. No financial figures are published on this site.