Source: wikibot/flattop-critical-assembly
= Flattop (critical assembly)
{wiki=Flattop_(critical_assembly)}
Flattop is a type of critical assembly used in nuclear research, particularly in the study of neutron interactions and reactor physics. It is designed to achieve and maintain a critical state, which is a condition where a nuclear fission chain reaction is sustained at a steady rate. Flattop assemblies typically consist of a configuration of fissile material, often arranged in a flat or pancake-like geometry.