The mass converting into energy can be calculated by using Einstein’s famous equation, E=mc 2. Multiplication factor (K) = number of neutrons produced/number of neutrons present before reaction It is the ratio of number of neutrons produced to the number of neutrons present before reaction. Multiplication factor or Reproduction factor
In chain reaction, the produced neutrons from reaction again and again combine with products as well as reactants (i.e fuel) until no fissionable fuel remains in the nuclear reactor device. The uncontrolled nuclear reaction is called chain reaction. The released energy during the process is given by Einstein’s famous equation,
Examples of nuclear fission series#
Therefore, neutrons may escape from reaction to initiate a series of reaction called as chain reaction. The produced neutrons are kinetically energetic (about 2MeV) and may again take part in further fission reactions by combing with the available fissionable fuels. This process releases high amount of energy along with 2 or 3 neutrons. When a heavy unstable nucleus is allowed to absorbs neutrons(0n1), it splits into two or more nuclei. This tremendous amount of energy is used for constructive purposes as well as production of electricity.
Many fission reactions are carried out in nuclear reactors to generate tremendous amount of energy. It is a complex process which is carried out in nuclear reactor. There must be at least one neutron to take part in fission reaction.The minimum mass to initiate reaction called critical mass, is required.The binding energy per nucleons should be low.It produces less products which are also less radioactive. It occurs at relatively low temperature and pressure as compared to fusion. Low energy of about 24MeV is produced during each reaction
High energy of about 200MeV is produced during each reaction. It requires a projectile(i.e neutron) for reaction. It is the formation of heavy stable nucleus from two or more lighter nuclei. It Is the splitting of heavy unstable nucleus into two or more nuclei. Image: Tihange nuclear power station-Tihange, Belgium Nuclear fission Vs fusion S.N These plants constructed in many parts of world are meant for production of electricity. Power plants are also a type of nuclear reactor. Nuclear fission in nuclear power plant is used for production of electricity. This tremendous amount of energy is used for generation of electricity and construction purposes. Nuclear reactors are powerful device used to generate tremendous amount of energy with the help of fission reactions. Splitting of 92U 235 by absorbing neutron is best example of nuclear fission reaction.ĩ2U 235 + 0n 1 → 56Ba 141 + 36Kr 92 + 3 0n 1 + QĪtom bomb are based on uncontrolled nuclear fission reaction. There is also release of 200MeV energy per fission. When 92U 235 is bombarded with thermal neutron, it splits up into 56Ba 141 and 36Kr 92 with the emission of 3 neutrons. Nuclear fission reaction of Uranium-235.
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