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I read the question If we assume that protons don't decay, then will all matter ultimately decay into Iron-56 or into nickel-62?, but I have a different question concerning the decay that has nothing to do with quantum tunneling.

My question is this: If $^{62}\rm Ni$ has a higher binding energy than $^{56}\rm Fe$, why wouldn't all of the heaviest elements (even those man-made) decay into $^{62}\rm Ni$?

Rick
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1 Answers1

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A 235U nucleus can't just decay into 62Ni. That would violate conservation of mass-energy and conservation of charge. It can decay into 62Ni plus other products, e.g., by fission.

but I have a different question concerning the decay that has nothing to do with quantum tunneling

Fission does involve tunneling.