Helium-3 vs. Helium-4
You can get to lower temperatures with Helium-3. Our cryostat would get to 1.2K with He-4, but down to 300mK with the He-3 insert. That might be useful for lower noise in quantum measurements.
You can get to lower temperatures with Helium-3. Our cryostat would get to 1.2K with He-4, but down to 300mK with the He-3 insert. That might be useful for lower noise in quantum measurements.