مقایسهٔ روش‌ها

	تحلیل ایمنی بحرانایی	تحلیل واپاشی هسته‌ای
حوزه	فیزیک هسته‌ای	فیزیک هسته‌ای
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1938	1900
پدیدآور	Otto Hahn, Fritz Strassmann	Ernest Rutherford, Frederick Soddy
نوع	safety assessment methodology	analytical process model
منبع بنیادین	American National Standards Institute (2019). Nuclear Criticality Safety in Operations with Fissionable Material Outside Reactors. ANSI/ANS-8.1-19.40.	Evans, R. D. (1955). The Atomic Nucleus. McGraw-Hill.
نام‌های دیگر	nuclear safety assessment, chain reaction analysis, fissile material control	decay kinetics, radioactive decay modeling, half-life analysis
مرتبط	5	5
خلاصه	Criticality safety analysis is a systematic evaluation of fissile material systems to ensure nuclear chain reactions remain controlled, originating from Hahn and Strassmann's 1938 discovery of nuclear fission. It determines safe limits on fissile mass, concentration, geometry, and spacing using neutron transport calculations and experimental validation to prevent uncontrolled nuclear excursions in storage, processing, and transportation.	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.