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The effect of the Coulomb barrier on charged meson production by nucleon-nucleus collisions is studied by a classical and qualitative treatment of the Coulomb interaction between the emitted meson and the residual nucleus. Especially, the discrepancy in the behavior of positive and negative meson production cross sections as functions of atomic number can be understood qualitatively by this simple argument.
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T. Kinoshita (1954) studied this question.
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