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Cesium-128

Cesium-128
Algemeen
Element cesium (Cs)
Nuclide 128Cs
Aantal protonen 55
Aantal neutronen 73
Nuclidische gegevens
Nuclidenmassa 127,907748866 u
Spin 1+
Bindingsenergie 8,406491 MeV
Massaoverschot −85,931378 MeV
Vervalgegevens
Type verval β+-verval
Halveringstijd 3,633 minuten
Vervalenergie 2,90646 MeV
Vervalproduct xenon-128
Isotopen van cesium
Portaal  Portaalicoon   Scheikunde
Natuurkunde

Cesium-128 of 128Cs is een onstabiele radioactieve isotoop van cesium, een alkalimetaal. De isotoop komt van nature niet op Aarde voor.

Cesium-128 ontstaat onder meer door radioactief verval van barium-128.

Radioactief verval

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Cesium-128 vervalt door β+-verval naar de stabiele isotoop xenon-128:

De halveringstijd bedraagt 3,6 minuten.

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Cesium-128
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