Talk:Mattauch isobar rule: Difference between revisions
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== Electron Capture == |
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It might be mentioned that the rule is only valid if one includes electron-capture as a decay mode. It is hypothetically possible for the mass difference to be small enough that neither an electron in one, nor a positron in the other, can be created. That would enable two adjacent bare nuclei to be absolutely stable. That's the case for <sup>7</sup>Li and <sup>7</sup>Be. But once an electron is bound, to the nucleus, it appears that electron capture can occur if beta decay can't. |
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Revision as of 17:57, 5 February 2021
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Electron Capture
It might be mentioned that the rule is only valid if one includes electron-capture as a decay mode. It is hypothetically possible for the mass difference to be small enough that neither an electron in one, nor a positron in the other, can be created. That would enable two adjacent bare nuclei to be absolutely stable. That's the case for 7Li and 7Be. But once an electron is bound, to the nucleus, it appears that electron capture can occur if beta decay can't.