Which risk increases when molten salt fast reactors encounter significant overheating?

💡 Explanation

Hot fuel causes thermal expansion, decreasing density. This leads to fewer fissions, but because the fuel enrichment must be higher than conventional reactors, there's runaway positive feedback from decreased neutron absorption probability: therefore, spontaneous criticality accidents become more likely, rather than mitigated temperature effects.

• Which risk increases when a semiconductor’s doping concentration increases beyond a threshold?
• Which consequence results when atmospheric particles scatter polarized light?
• Which outcome would manifest when thermally stressing buckled polymer chains?
• Which consequence results when the inertial confinement fusion (ICF) target implodes asymmetrically?
• Which outcome occurs when molecular orbitals constructively interfere in a laser gain medium?
• Which outcome occurs when jet engine combustion instabilities trigger acoustic resonance?