I read this: "These so-called fast neutrons do not cause fission as efficiently as slower-moving ones so they are slowed down in most reactors by the process of moderation." Why
These so-called fast neutrons do not cause fission as efficiently as slower-moving ones so they are slowed down in most reactors by the process of moderation.
Why slowly neutrons "thermal" are more efficiently in causecausing the fission? Is due to their larger cross section? AmdAnd why the cross section of thermal neutron is larger thenthan the faster ones?