The intensity of the electrons emitted in the decay (11.1) of polarized cobalt-60 nuclei is found to be consistent with the form

where Ï… is the magnitude of the electron velocity v and θ is the angle between its direction and the direction of the ⁶⁰Co spin. Deduce the value of the coefficient α by considering events in which the electron is emitted in the direction of the spin of the decaying nuclei. The spins of the ⁶⁰Co and ⁶⁰Ni nuclei are J = 5 and J = 4, respectively, and the energies of the emitted particles are sufficiently small that orbital angular momenta may be neglected.

Transcribed Image Text:

I(v, 0) = 1+ a, cos 0,