<Dd> N (T) = C L (T) F (Z, T) p E (Q − T) 2 (\ displaystyle N (T) = C_ (L) (T) F (Z, T) pE (Q-T) ^ (2)) </Dd> <P> where T is the kinetic energy, C is a shape function that depends on the forbiddenness of the decay (it is constant for allowed decays), F (Z, T) is the Fermi Function (see below) with Z the charge of the final - state nucleus, E = T + mc is the total energy, p = √ (E / c) − (mc) is the momentum, and Q is the Q value of the decay . The kinetic energy of the emitted neutrino is given approximately by Q minus the kinetic energy of the beta . </P> <P> As an example, the beta decay spectrum of Bi (originally called RaE) is shown to the right . </P> <P> The Fermi function that appears in the beta spectrum formula accounts for the Coulomb attraction / repulsion between the emitted beta and the final state nucleus . Approximating the associated wavefunctions to be spherically symmetric, the Fermi function can be analytically calculated to be: </P>

When a nucleus beta-decays which of the following is not one of the things that results