Main use: Superconductivity and cryogenic research as a coolant, aerospace for rocket fuel system pressurization, medical imaging as a coolant in MRI equipment, semiconductor production as a protective gas, balloon inflation, metal welding.
Main use: Used in CT scans and nuclear medicine, as an anesthetic for certain types of surgeries, for research and analysis, as a high-intensity light source.
Main use: Used for high-intensity illumination and special bulbs, as a neutron moderator in nuclear reactors, as a standard light source in spectral analysis.