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Showing 1 to 1 of 1 for “"surface production models"”.
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Study of the Bi209 (gamma,pi-xn) Po209-x and Pb206 (He3,xn) Po209-x reactions by detection of polonium alpha activities
… free neutrons. This result disagrees with both surface production and volume production models. At all energies, the cross section for x=2 dominates. This cannot be simply explained in terms of the free neutron cross sections. It is suggested that this experiment may be preferentially exciting …