Question

Discuss Fermi theory of Beta Decay in detail?
and what do you mean by nuclear isomerism in Nuclear Physics?

Answer 1

Isomer, in nuclear physics, any of two or more nuclides (species of atomic nuclei) that consist of the same number of protons and the same number of neutrons but differ in energy and manner of radioactive decay, and that exist for a measurable interval of time. Nuclear isomers are atoms with the same mass number and atomic number, but with different states of excitation in the atomic nucleus. The higher or more excited state is called a metastable state, while the stable, unexcited state is called the ground state.