On Tue, 29 Mar 2011 08:00:44 +0100, dennis@home wrote:

I was looking at some decay chains and didn't spot any fission products that
decayed by alpha.
It must be statistically possible but it could be so rare that it doesn't
happen.

No, you're simply flat wrong. If there was no alpha decay from natural fission,
then alpha particles would not exist in nature. They do, ergo alpha decay *does*
occur. An example is U238 fission, which occurs naturally in small quantities.


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