Eric--
Whoever wrote the Wikipedia item you reference does not appear to understand
the difference between spin of 3/2+ and 3/2-. The statement about the spin of
Ni-61 is incorrect.
Bob
----- Original Message -----
From: Eric Walker
To: vortex-l@eskimo.com
Sent: Tuesday, September 09, 2014 11:30 PM
Subject: Re: [Vo]:Rossi on Ni62
I wrote:
About the beta-delayed gamma -- it's not clear that the 63Ni* gamma decay
is a beta-delayed gamma in this instance (see the decay in [1]). But as you
know beta-delayed gammas are a frequent occurrence. The half-life of the beta
decay in this case is 100 years, so if there is beta-delayed gamma emission,
the activity would be significant.
The excited state after a beta- decay would be in the daughter (63Cu) not the
parent (63Ni). I don't see any evidence for a 63Cu* excited state. You are
probably right. Embarrassing rookie error on my part.
Eric
