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Reaction atlas · NeNa cycle

Radioactive decay · NeNa cycle

21Na(β+ν)21Ne

: sodium‑21 → neon‑21 + positron + neutrinoHow to read the notation

21Na, made when 20Ne captures a proton, turns into stable 21Ne by emitting a positron and a neutrino; the cycle then continues with a proton capture on 21Ne.

Facts

Reaction rates
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Q-value · energy released
3.547 MeV
Q includes positron annihilation (2mec² = 1.022 MeV). Without it, 2.525 MeV is shared by the positron and the neutrino.
Half-life of 21Na
22.5 s
Kind
Radioactive decay

How to cite this page

J. Skowronski, 21Na(β+ν)21Ne, in Reaction atlas, 2026-10-12, https://jskowron.eu/atlas/21Na-bp-21Ne.

Cite the date you used; it is the last change to this page.

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