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URL: https://nl.wikipedia.org/wiki/Beryllium-10

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Beryllium-10

Uit Wikipedia, de vrije encyclopedie
Beryllium-10
Beryllium-10 op de isotopenkaart
Beryllium-10 op de isotopenkaart
Algemeen
Element beryllium (Be)
Nuclide 10Be
Aantal protonen 4
Aantal neutronen 6
Nuclidische gegevens
Nuclidenmassa 10,013533818 u
Spin 0+
Bindingsenergie 6,497711 MeV
Massaoverschot 12,60667 MeV
Vervalgegevens
Type verval β−-verval
Halveringstijd 1,513 × 106 jaar
Vervalenergie 555,939 keV
Vervalproduct boor-10
Isotopen van beryllium
Portaal  Portaalicoon   Scheikunde
Natuurkunde

Beryllium-10 of 10Be is een onstabiele radioactieve isotoop van beryllium, een aardalkalimetaal. De isotoop komt in zeer kleine hoeveelheden (sporen) op Aarde voor.

Vorming

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Beryllium-10 ontstaat bij het radioactief verval van lithium-11, door inwerking van kosmische straling (derhalve is het een kosmogeen nuclide). Dit proces is vergelijkbaar met de vorming van 14C, maar 10Be heeft een veel langere vervaltijd. Het kan daarom gebruikt worden om geologische processen zoals erosie en vorming van sedimentaire lagen te volgen.

Radioactief verval

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Beryllium-10 bezit de grootste halveringstijd van alle isotopen van beryllium, namelijk 1,513 × 106 jaar. Het vervalt door bètaverval tot de stabiele isotoop boor-10:

Overgenomen van "https://nl.wikipedia.org/w/index.php?title=Beryllium-10&oldid=60270823"
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