Neutron emission

Thread Starter

circuit2000

Joined Jul 6, 2006
33
1)Neutron emission is not a possible mode of decay for K(40,19).Why?
I think it is because the neutron to proton ratio for potassium(40,19) is almost unity(more precisely N/P=1.1). So, neutron emission is not a mode of decay to gain stability. Is it right?
 

Papabravo

Joined Feb 24, 2006
13,539
Why? It is the strong force that governs reactions in the nucleus and it operates over very short distances. In a K(40,19) nuclues the energy is not there for the emission of a neutron.

The wikipedia article mentions only Helium-5 and Beryllium-13 as examples of neutron emission, and then says that by definition the decay of Helium-5 is a case of alpha decay. I guess they think a really PO'd neutron ejected the Alpha particle. That's a hard one to get your arms around.
http://en.wikipedia.org/wiki/Neutron_emission
 
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