Nuclear Physics 13.2.3 and 13.2.4

13.2.3. Evidence for the existence of nuclear energy level

>> 1. The Gamma ray spectra change
     2. The change in Kinetic Energy of the Alpha Particles

13.2.4. Describe Beta Decay including the existence of the neutrino

>>  Beta Decay is the loss of fast moving electron. The experiment that showed a continuous spectrum of energy for Beta Decay appeared to contradict the principle of conservation of energy. it had been found to be continuous because of a continuous spectrum of energy, the disappearance of the kinetic energy and momentum. This is due to neutrino which is too small too measure.