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	原子力燃料サイクル分析	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, Alvin Weinberg	Ernest Rutherford, Frederick Soddy
種類	system-level material and energy accounting	analytical process model
原典	International Atomic Energy Agency (2021). Nuclear Fuel Cycle Information System (NFCIS). IAEA-NDS-3/Rev.2.	Evans, R. D. (1955). The Atomic Nucleus. McGraw-Hill.
別名	fuel cycle modeling, material accounting, energy lifecycle assessment	decay kinetics, radioactive decay modeling, half-life analysis
関連	5	5
概要	Nuclear fuel cycle analysis is a comprehensive assessment of uranium and plutonium flows from extraction through enrichment, power generation, and waste management, originating from Fermi's controlled nuclear reaction. It quantifies resource requirements, energy balances, greenhouse gas emissions, and waste streams to evaluate nuclear energy sustainability, proliferation risk, and economic viability.	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.