Rotational excitation in H2–H2 collisions: Close‐coupling calculations

摘要: Rotational excitation in molecule−molecule collisions has been treated for the first time by accurate quantum close−coupling scattering calculations, employing an expansion basis set of two to three rotational levels each molecule and correctly accounting exchange identical particles. Elastic inelastic cross sections have computed para−para, ortho−ortho, para−ortho hydrogen molecules assuming intermolecular potential suggested previously. The accuracy recent ’’effective potential’’ calculations is demonstrated comparison with exact results.