Tuesday 29 March 2011

Nuclear fission Process (Process)


Introduction to nuclear fission process


           The reactions in which composition of one or more nuclei changes to for new nuclei and a very large amount of energy is released are called nuclear reactions. The nuclear reactions are of two types: one is nuclear fission and the other is nuclear fusion. The discovery of nuclear fission is one of the most significant events in the history of science. In 1939, three German scientists, Lise Meinter, Otto Hahn and Fritz Strassman caused fission of uranium nuclei by bombarding it with slow neutrons.



Nuclear Fission Process


          There are two types of forces which act on the particle inside a nucleus – electrostatic force and nuclear force. Electrostatic force is acting between two any charged particles. All nuclei contain positively charged protons and the neutral particles neutrons. Nuclear force is acting between the particles, which are inside the nucleus. The force acting between the protons – proton, proton – neutron and the neutron – neutron is called nuclear force. Nuclear force is very strong force and starts operating only when the two particles are very close to each other. Nuclear force of attraction decreases rapidly as the distance between the two particles increases.

Nuclear Fission Process : Conclusion


           In the nuclear fission reaction, new elements are formed due to the splitting of the nuclei. In the nuclear fission, the composition of nucleus change and it release a very large amount of energy. Nuclear fission is irreversible reactions. The change in the pressure and temperature, does not affect the rate of nuclear fission.

           Instead making a diagram explaining the steps of this process, I´ve decided to show a educational video where is explained by pictures and animation, the nuclear fission process:


PD: this is the link of the video source: www.FreeScienceLectures.com

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