Bohr and Wheeler’s Explanation of Nuclear Fission (Liquid Drop Model): Nuclear Physics Animation
Автор: Physics4students
Загружено: 2017-01-12
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Описание:
Niels Bohr and John A. Wheeler explained the nuclear fission process with the help of liquid drop model. A liquid drop has a spherical shape due to surface tension. On applying external force the sphere changes into ellipsoid, which may change into a dumb bell shape when the force is larger. This may break at the narrow end into two portions.
In the same way, when the heavier nucleus absorbs a neutron, a compound nucleus is formed and is left in an excited state. The
excitation energy sets up a series of rapid oscillations. The compound nucleus undergoes distortion from spherical to dumb bell shape. Each portion of the dumb bell has a positive charge and one repels the other. This results in fission and the formation of fission fragments. This is the explanation of nuclear fission by Liquid-drop model, in nuclear physics, description of atomic nuclei formulated (1936) by Niels Bohr and used (1939) by him and John A. Wheeler.
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