Define the process of nuclear fission. write the steps involved in generating electricity in a nuclear reactor.
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Nuclear fission is the splitting of a massive nucleus into photons in the form of gamma rays, free neutrons, and other subatomic particles.
For example, Uranium disintegrates into Barium-141 and Krypton-92 upon bombardment with 1 neutron and emit 3 more neutrons.
For a fission reaction, two conditions need to be satisfied:
1. Critical mass of the substance (the minimum amount of mass is required for fission to be self-sustaining).
2. A relatively slow neutron is required to initiate the process.
Nuclear reactor is a device to harness nuclear energy (fission energy) in a controlled and economic way. The energy produced is used to generate electricity and to power ships. The basic working process is: the tremendous heat generated from the fission reaction heats the working fluid (water or gas) which drives the turbine to generate electricity or drives the propeller in ships.
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Nuclear fission:- Nuclear fission is the process in which a large nucleus splits into two smaller nuclei with the release of energy. In other words, fission the process in which a nucleus is divided into two or more fragments, and neutrons and energy are released.
The mass changes and associated energy changes in nuclear reactions are significant. For example, the energy released from the nuclear reaction of 1 kg of uranium is equivalent to the energy released during the combustion of about four billion kilograms of coal.
==the steps in generating electricity in nuclear reactor are:-
A nuclear reactor produces and controls the release of energy from splitting the atoms of uranium.
Uranium-fuelled nuclear power is a clean and efficient way of boiling water to make steam which drives turbine generators. Except for the reactor itself, a nuclear power station works like most coal or gas-fired power stations.