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Please look at the attached file.
The first part of the question: why it doesn't decay to the GS. I think that's simply because the nuclear spin changes by 4 and therefore this decay is very supressed.
But how "is it possible for the isomeric state at 140kev which decays by gamma emisson, to have a half life of several hours." (ie. a half life comparable to the original state (Mo) decaying to the allowed excited of Tc. Any tips on what approach I can take to show this?
Thanks.
The first part of the question: why it doesn't decay to the GS. I think that's simply because the nuclear spin changes by 4 and therefore this decay is very supressed.
But how "is it possible for the isomeric state at 140kev which decays by gamma emisson, to have a half life of several hours." (ie. a half life comparable to the original state (Mo) decaying to the allowed excited of Tc. Any tips on what approach I can take to show this?
Thanks.
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