Abstract
The scattering of 22Mev alpha particles from carbon, magnesium and silicon has been studied with scintillation counter technique. The elastic scatterings from carbon and magnesium have shown the characteristic diffraction pattern, which can be obtained from the theory of diffraction by an opaque sphere. The observed inelastic angular distributions could be approximated by the squares spherical Bessel function of second order as predicted by direct interaction theory. The agreement is appreciably good for our elements. However, the cross sections do not tend toward small values in the forward direction for magnesium and silicon.
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