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Topic: question on beta+ decay and electron capture  (Read 6115 times)

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Offline tisu85

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question on beta+ decay and electron capture
« on: September 23, 2006, 02:28:18 AM »
hi guys, i have a homework problem which asks me to explain why there are NO beta + or EC decays in the decay of 238U to 206Pb . This chain only has beta- and alpha decay. Can anyone help me with this??
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Offline Mitch

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Re: question on beta+ decay and electron capture
« Reply #1 on: September 23, 2006, 05:31:38 AM »
Most heavy nuclei want to keep a neutron:proton ratio of 1.5 or so. Keep that in mind when answering the question.
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