Convergent calculations of positron scattering from molecular hydrogen

[摘要] An overview is given of the recently developed adiabatic-nuclei convergent closecoupling method for positron-molecule scattering. Fixed-nuclei single-centre calculations of positron-H2scattering are presented. Particular emphasis is given to demonstrating convergence with increasing size of the basis and the projectile partial-wave expansion. Results are converged to within ±5%.

[发布机构] Curtin Institute for Computation, Department of Physics, Astronomy and Medical Radiation Sciences, Curtin University, Perth; WA; 6102, Australia^1

[关键词] Convergent close couplings;Molecular hydrogen;Partial wave expansion;Positron scattering