Decay of 9Be

Hey Guys,
I know that this would rather be considered as physics than chemistry, but i don't really know where else i could ask this question.

In an atomic bomb, there's a neutron generator, consisting of two elements:
209Po and 9Be. The 209Po isotope emits alpha-particles, which, when they hit the 9Be, cause them to decay to 8Be and neutrons.

Can anybody write down an equation for that reaction ?

Thx,
Greetz Sebi

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