Before revision: Multiplication The multiplication factor, , is defined as (see Nuclear chain reaction): (: number of fission reactions in generation) If is greater than 1, the chain reaction is supercritical, and the neutron population will grow exponentially.
After revision: Multiplication The multiplication factor, , is defined as (see Nuclear chain reaction): If is greater than 1, the chain reaction is supercritical, and the neutron population will grow exponentially.