Question

iDesie ench of the three processes of radioactive alpha, beta and gamma (i) Explain how the observation of the decay product energy spectra in nuclear (ii) A set of perticles undergoes radioactive decay. The initial population at decay beta decay of Bi is evidence for the existence of the neutrino time t 0 is No and the number remaining at time t is N(t). Write down an cxpression for N(1) in terms of the particle lifetime τ iv) At time t 0.5 s the decay rate is 100 decays per socond, and at time t » 1 s the decay rate is 30 decays per second. Determine the lifetime of the particle.

Answer 1

a) Alpha oi 2 38 Th 9。 2 2. b) Het is マ거 久.5H 234 amma eliuaj amma lt ID Le/m 228 23у

210 04 1) divicu In [o 33) e