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Bohr model and dimensional scaling analysis of
Bohr model and dimensional scaling analysis of

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... We know that the wave-like nature of the scattering particles may be neglected only if their wavelength is much smaller than the length scale on which the scattering system varies. For nuclear scattering, the appropriate length scale would be at most the size of the nucleus and should probably be of ...
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... • The further quarks apart, the stronger the force; the closer the quarks, the weaker the interaction • What will happen if we increase the energy “high enough”? ...
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... 2. The smallest unit of an Ionic Compound is called a “Unit Cell”. Because of the regular crystal structure of an ionic compound, they are not referred to as molecules. 3. Ionic solids are generally High Melting Points (typically 300°C to 1000°C). Since a strong force can only shatter the crystal bu ...
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... sensitivity to muons and their decay electrons is almost independent of where they decay in the scintillator. The photomulitpliers view the scintillator from above as shown in the diagram. Gain equalization can be achieved by connecting the photomultiplier outputs one by one direct to the discrimina ...
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Atomic nucleus



The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom. The atomic nucleus was discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment. After the discovery of the neutron in 1932, models for a nucleus composed of protons and neutrons were quickly developed by Dmitri Ivanenko and Werner Heisenberg. Almost all of the mass of an atom is located in the nucleus, with a very small contribution from the electron cloud. Protons and neutrons are bound together to form a nucleus by the nuclear force.The diameter of the nucleus is in the range of 6985175000000000000♠1.75 fm (6985175000000000000♠1.75×10−15 m) for hydrogen (the diameter of a single proton) to about 6986150000000000000♠15 fm for the heaviest atoms, such as uranium. These dimensions are much smaller than the diameter of the atom itself (nucleus + electron cloud), by a factor of about 23,000 (uranium) to about 145,000 (hydrogen).The branch of physics concerned with the study and understanding of the atomic nucleus, including its composition and the forces which bind it together, is called nuclear physics.
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