{"id":13612,"date":"2017-02-01T16:48:12","date_gmt":"2017-02-01T16:48:12","guid":{"rendered":"http:\/\/sitepourvtc.com\/?page_id=13612"},"modified":"2022-10-20T07:50:13","modified_gmt":"2022-10-20T07:50:13","slug":"nuclear-fission-chain-reaction","status":"publish","type":"page","link":"https:\/\/sitepourvtc.com\/nuclear-power\/reactor-physics\/nuclear-fission-chain-reaction\/","title":{"rendered":"Nuclear Fission Chain Reaction"},"content":{"rendered":"
The fission process may produce 2, 3, or more free neutrons<\/a><\/strong> that are capable of inducing further fissions<\/strong> and so on. This sequence of fission events is known as the fission chain reaction<\/strong>, and it is important in nuclear reactor physics<\/a>.<\/p>\n The chain reaction<\/strong> can take place only in the proper<\/strong> multiplication environment<\/strong> and only under proper conditions<\/strong>. Suppose one neutron causes two further fissions. In that case, the number of neutrons in the multiplication system will increase in time, and the reactor power (reaction rate<\/a>) will also increase in time. To stabilize such a multiplication environment, it is necessary to increase the non-fission neutron absorption<\/a> in the system (e.g.,, to insert control rods<\/a><\/strong>). Moreover, this multiplication environment (the nuclear reactor<\/a>) behaves like an exponential system, which means the power increase is not linear, but it is exponential<\/strong>.<\/p>\n