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Alpha and proton decay

by majid313mirzae
Tags: alpha, decay, proton
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majid313mirzae
#1
Apr22-14, 05:48 AM
P: 3
All nuclei with A > 210 are alpha emitters, yet very few emit protons spontaneously.
Yet both decays lower the Coulomb energy of the nucleus. Why is
proton decay not more common?
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Vanadium 50
#2
Apr22-14, 07:00 AM
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Look at the binding energy curve.
mathman
#3
Apr22-14, 06:52 PM
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P: 6,040
Quote Quote by majid313mirzae View Post
All nuclei with A > 210 are alpha emitters, yet very few emit protons spontaneously.
Yet both decays lower the Coulomb energy of the nucleus. Why is
proton decay not more common?
Some of these nuclei undergo beta decay, not alpha.

lpetrich
#4
Apr25-14, 04:04 PM
P: 518
Alpha and proton decay

The binding energy of alpha particles means more energy available to make the decay happen -- it happens by quantum-mechanical tunneling.

I could dig up the alpha decay rate if anyone is interested - it also works for protons.


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