The Electrical Charge Distribution in a Number of nuclei is not observed
It had been inferred from the experimental observations that the majority of átomic nuclei are spherical or nearly spherical in shape. The electrical charge distribution in a númber of nuclei is not observed to be spherically symmetric which is indicated by their electric quadrupole moment. The radius, R, of various nuclei can be approximately given by R = RoA/3 where A is the number of nucleons and Ro a constant which is found k differènt: thods and lies in the range of (1.1-1.5) x 10-15 of measui nent of size are based either upon the effect of ele to distribution of electric charge in the nucleus when probed by electron or mu-meson, or the effect of nuclear forces which are sensitive to the distribution of nuclear matter in the nucleus when probed by nucleons or light nuclei.
The size of the nucleus was earlier estimated from Rutherford's experiment başed on scattering of alpha particles by various atoms. It showed that larger is the angle of scattering through which a particles get scattered, closest įt approaches the atomic nucleus, A rough estimate of R can be made from the distance of closest approach of an alpha particle (2He') of charge 2e, mass m and velocity, v to, a nucleus of charge Ze.
If the kinetie energy is equal to the repulsive Coulomb energy between-these two particles, it comes to rest momentarily such that the distançe of closest approach R is given by m.
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