
Antares achieved criticality in a test reactor at Idaho National Laboratory. The milestone marks the first time a small modular nuclear reactor design has reached self-sustaining nuclear reactions. The reactor uses TRISO fuel with uranium oxide pellets encased in carbon and ceramic layers. The design contains fuel pellets within a graphite sheath to limit neutron escape and isotope formation.
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Helion Valued at $15.5B in $465M Funding Round
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