Title: Positron magnesium scattering in intermediate energies Authors: Y Zhou^{1}, K Ratnavelu^{2} Z Zhou^{1} and J Pang^{1} Affliations: {2} Institute of Mathematical Sciences University of Malaya 50603 Kuala Lumpur, MALAYSIA {1} Institute of Atomic and Molecular Physics National Laboratory of Theoretical and Computational Chemistry, Jilin University Changchun, China, 130023 Summary: Ionization cross section, positronium cross section,the Elastic and inelastic differential cross section and total scattering cross section have been calculated for positron scattering from magnesium at intermediate energies. The method used is the coupled channels optical method that can take all channels into account. The theoretical results are compared with experimental measurements and the corresponding electron-magnesium scattering