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	原子炉キネティクス	放射性崩壊分析
分野	原子核物理学	原子核物理学
系統	Process / pipeline	Process / pipeline
提唱年	1942	1900
提唱者	Enrico Fermi, George Westinghouse	Ernest Rutherford, Frederick Soddy
種類	dynamic systems analysis	analytical process model
原典	Lamarsh, J. R. (1983). Introduction to Nuclear Engineering (2nd ed.). Addison-Wesley.	Evans, R. D. (1955). The Atomic Nucleus. McGraw-Hill.
別名	neutron kinetics, power transient modeling, reactor control analysis	decay kinetics, radioactive decay modeling, half-life analysis
関連	5	5
概要	Reactor kinetics is the study of neutron population dynamics in a reactor core, originating from Fermi's first controlled chain reaction in 1942. It models power changes in response to control rod movements, temperature feedback, and accidental transients using coupled differential equations accounting for prompt and delayed neutrons, to ensure safe operation, predict transient behavior, and design control systems.	Nuclear decay analysis is the systematic study of radioactive transformation processes, originating from Rutherford and Soddy's work in the early 1900s. It quantifies the rate and modes of nuclear disintegration using decay constants, half-lives, and branching ratios to predict activity evolution, date samples via radiometric methods, and assess the long-term hazard from radioactive materials.