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(a) Draw the energy level diagram showing the emission of beta-particles followed by gamma-rays by a " "_(27)^(60)Co nucleus. (b) Plot the distribution of kinetic energy of beta-particles and state why the energy spectrum is continuous. |
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Answer» Solution :(a) Energy level diagram SHOWING emission of `beta`-particle followed by `gamma`-rays by a `" "_(27)^(60)Co` NUCLEUS is s (b) DISTRIBUTION curve of K.E. of `beta`-particles is shown in Fig.13.11.  Energy spectrum of `beta`-particles is continuous because during emission of `beta^(-)`-particles an antineutrino (and during emission of `beta^(+)`-particle a neutrino) particle is also emitted. THUS, the energy RELEASED is shared by `beta`-particle and antineutrino (or neutrino) particle randomly. As a result, energy spectrum of `beta^(-)`-particles is continuous. |
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