Why does positron emission occur only in artificially produced isotopes?

Subject: Why does positron emission occur only in artificially produced isotopes?

Date: Thu Jul 17 05:13:24 2003
Posted by Chloe
Grade level: 10-12 School: SCONZ
City: Auckland State/Province: Auckland Country: New Zealand
Area of science: Physics
ID: 1058436804.Ph

Message:


In the radioactive decays of naturally occuring isotopes there are alpha and 
beta decays. However positron emission only occurs in artificially produced 
isotopes, rather than naturally occuring radioactive isotopes. can you please 
tell me why? thank you.

Re: Why does positron emission occur only in artificially produced isotopes?

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