השוואת שיטות

	ניתוח הפעלה נייטרונית	תחבורת ניוטרונים וחלקיקים בשיטת מונטה קרלו
תחום	פיזיקה גרעינית	פיזיקה גרעינית
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1936	1949
הוגה השיטה	George de Hevesy, Hilde Levi	Nicholas Metropolis, Stanislaw Ulam
סוג	analytical measurement technique	probabilistic computational method
מקור מכונן	Chadwick, J. (1932). Possible Existence of a Neutron. Nature, 129(3252), 312.	Metropolis, N., & Ulam, S. (1949). The Monte Carlo Method. Journal of the American Statistical Association, 44(247), 335–341.
כינויים	NAA, activation analysis, trace element analysis	Monte Carlo simulation, stochastic transport, particle history method
קשורות	5	5
תקציר	Neutron activation analysis (NAA) is an analytical technique for determining elemental composition by bombarding samples with neutrons to produce radioactive isotopes, invented by de Hevesy and Levi in 1936. By measuring decay gamma rays from irradiated samples, NAA quantifies trace and major elements with high sensitivity, specificity, and accuracy without requiring destructive dissolution or complex sample preparation.	Monte Carlo neutron and particle transport is a stochastic simulation method that tracks individual particle histories through matter, developed by Metropolis and Ulam in 1949 during the Manhattan Project. By sampling random numbers to determine collision locations, energy transfers, and scattering angles, it produces unbiased estimates of reaction rates, flux distributions, and detector responses without discretizing angle or energy variables.