Atomic and Nuclear PhysicsDOE-HDBK-1019/1-93CHART OF THE NUCLIDESInformationforStableNuclidesFor the stable isotopes, in addition to the symbol and the atomic mass number, the numberpercentage of each isotope in the naturally occurring element is listed, as well as the thermalneutron activation cross section and the mass in atomic mass units (amu). A typical block fora stable nuclide from the Chart of the Nuclides is shown in Figure 4.Figure 4 Stable NuclidesInformationforUnstableNuclidesFor unstable isotopes the additional information includes the half life, the mode of decay (forexample, b-, a), the total disintegration energy in MeV (million electron volts), and the mass inamu when available. A typical block for an unstable nuclide from the Chart of the Nuclides isshown in Figure 5.Figure 5 Unstable NuclidesRev. 0Page 13NP-01
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