Electron and positron scattering from diatomic molecules
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This thesis describes the development of the adiabatic-nuclei convergent close-coupling method and its application to positron scattering from vibrationally excited molecular hydrogen H2 and electron scattering from the vibrationally excited molecular hydrogen ion H2+ and its isotopologues (D2+, T2+, HD+, HT+ and TD+). For the first time, convergence is achieved in both the fixed-nuclei close-coupling (target state) and projectile partial-wave expansions. Results are also in excellent agreement with experiment.