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With the [[Bateman equation]] you can calculate the quantity of decay isotopes in a decay chain as a function of time. In this graphics this calculation shows the result for the isotopes an the sum of isotopes for the decay chain 241Pu.
Mit der Bateman Funktion kann die Menge der Isotope in einer Zerfallskette als Funktion der Zeit berechnen. Diese Grafik zeigt das Ergebnis einer solchen Berechnung für die Isotope und die Summe der Isotope für die Zerfallskette 241Pu.