I wrote:

On Tue, Nov 27, 2012 at 4:18 PM, Andy Findlay <[email protected]>wrote:
>
>  I wasn't aware that hydrogen was capable of beta decay.
>>
>
> Beta minus decay is possible under extreme conditions.  But you would need
> to temporarily place the hydrogen you wanted to decay on a core-collapsing
> star.
>

On second thought, β- decay isn't correct.  I'm having a hard time saying
for sure exactly what kind of beta decay it is.  I don't imagine it's the
normal inverse beta decay (inner shell electron capture), since there are
probably few inner shell electrons hanging around.  But β+ decay implies
positron emission, and I don't see evidence of that.  Wikipedia refers to
it as "reversed beta-decay" in one place.  The reaction seems to be:

  p + e- → N + v

Eric

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