השוואת שיטות

	ניתוח דעיכה רדיואקטיבית	ניתוח הפעלה נייטרונית
תחום	פיזיקה גרעינית	פיזיקה גרעינית
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1900	1936
הוגה השיטה	Ernest Rutherford, Frederick Soddy	George de Hevesy, Hilde Levi
סוג	analytical process model	analytical measurement technique
מקור מכונן	Evans, R. D. (1955). The Atomic Nucleus. McGraw-Hill.	Chadwick, J. (1932). Possible Existence of a Neutron. Nature, 129(3252), 312.
כינויים	decay kinetics, radioactive decay modeling, half-life analysis	NAA, activation analysis, trace element analysis
קשורות	5	5
תקציר	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.	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.