Liquid Drop Model And Shell Model Pdf
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File Name: liquid drop model and shell model .zip
- Shell model versus liquid drop model for strangelets.
- Semi-empirical mass formula
- Liquid-drop model
- Nuclear Physics
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Liquid-drop model , in nuclear physics , a description of atomic nuclei in which the nucleons neutrons and protons behave like the molecules in a drop of liquid. If given sufficient extra energy as by the absorption of a neutron , the spherical nucleus may be distorted into a dumbbell shape and then split at the neck into two nearly equal fragments, releasing energy. Although inadequate to explain all nuclear phenomena, the theory underlying the model provides excellent estimates of average properties of nuclei. Russian-born American physicist George Gamow formulated the model in , and Austrian physicists Lise Meitner and Otto Frisch used it in to explain nuclear fission.
Shell model versus liquid drop model for strangelets.
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Semi-empirical mass formula
This theory is based on the liquid drop model proposed by George Gamow. According to this model, the atomic nucleus behaves like the molecules in a drop of liquid. But in this nuclear scale, the fluid is made of nucleons protons and neutrons , which are held together by the strong nuclear force. The liquid drop model of the nucleus takes into account the fact that the nuclear forces on the nucleons on the surface are different from those on nucleons in the interior of the nucleus. The interior nucleons are completely surrounded by other attracting nucleons. Here is the analogy with the forces that form a drop of liquid.
Figure shows the energy levels predicted by the shell model using The Liquid Drop Model of the Nucleus. In the the Liquid Drop.
In nuclear physics and nuclear chemistry , the nuclear shell model is a model of the atomic nucleus which uses the Pauli exclusion principle to describe the structure of the nucleus in terms of energy levels. Gapon in The model was developed in following independent work by several physicists, most notably Eugene Paul Wigner , Maria Goeppert Mayer and J.
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An a - cluster model of nuclear structure based on power of proton+neutron (pn)-pairs to bind themselves to a - clusters is proposed. The a - cluster is taken as.