Open Access
Table 1.
Most important modifications in each edition of KNC and the number of presented nuclides.
| Edition | Year of publication | Number of nuclides (ground states and meta-stable states | Most important development |
|---|---|---|---|
| 1 | 1958 | 1517 | The standard KNC colours used in the nuclide boxes are introduced. |
| 2 | 1961 | 1587 | Small coloured corner triangles indicate a decay mode with a branching ratio below or equal to 5%. |
| 3 | 1968 | 1837 | The explanatory booklet has been extended to four languages. The colour green is used to indicates spontaneous fission. |
| 4 | 1974 | 2137 | Gamma energies are given in keV. Short-lived nuclides have been added. |
| 5 | 1981 | 2224 | Double beta (2β), proton decay (p) and β delayed particle emissions (βp, βn…) are included in the Chart. |
| 6 | 1995 | 2684 | A small purple triangle is introduced to indicate cluster emission (ce). The nuclide box shows the particular cluster(s) emitted e.g. C 12, O 20, etc. |
| 7 | 2006 | 3658 | The booklet is extended to include a historical overview and structure of the atom. |
| 8 | 2012 | 3846 | The booklet is extended to include a Reduced Decay Schemes section and new printed versions of the Chart are introduced (Auditorium Chart, Roll Chart and Nuclide Carpet). The new online version KNCO is available as of 2014. |
| 9 | 2016 | 3993 | New notation for isomeric transition (IT). The Reduced Decay Schemes section is extended to 46 schemes. |
| 10 | 2018 | 4040 | The Reduced Decay Schemes section is extended to 84 diagrams. |
| 11 | 2022 | 4122 | Thermal Neutron Chain Fission Yields and Cross Section data are actualized, and the Reduced Decay Schemes section extended to 100 schemes. |
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