Radioactivity

Nuclear Reactor :- A nuclear reactor is a device used to initiate and control a self sustained nuclear chain reaction. Nuclear reactors are used at nuclear power plants for electricity generation an in nuclear marine propulsion.

Nuclear Fusion :- It is a nuclear process in which two light (small) nuclei fuse to form a larger nucleus, energy is released. Examples :- ₁H¹ + ₁H¹ → ₁H² + e⁺ + v + 0·42 MeV ₁H² + ₁H² → ₂He³ + n + 3·27 MeV ₁H² + ₁H² → ₁H³ + ₁H¹ +…

Nuclear Fission :- Nuclear Fission is a reaction wherein a heavy nucleus is bombarded by neutrons and thus become unstable, which causes decompose or split into two nuclei with equivalent size and magnitude, with a great detachment of energy and the emission of two or three neutrons. Example :- Isotope ₉₂U²³⁵ bombarded with a neutron…

Properties of Alpha Beta and Gamma Rays :- During radioactive decay, particles like alpha, beta and gamma rays are emitted by the unstable atoms like uranium, thorium, polonium, radium, actenium etc to gain stability. Properties of Alpha Rays :- Properties of Beta Rays :- Properties of Gamma Rays :-

Radioactivity :- Henry Becquerel discovered radioactivity in 1896 by accident. Experiments performed subsequently showed that radioactivity was a nuclear phenomenon in which an unstable nucleus undergoes a decay. Becquerel studying the fluorescence and phosphorescence of compounds irradiated with visible light, the observed an interesting phenomenon. After illuminating some pieces of uranium-potassium sulphate with visible light…