The multichannel eikonal theory program for electron-atom scattering Original Research Article

The operation of the code MET_cross for the solution of the semiclassical multichannel eikonal theory for electron-atom scattering is described. Also described is a second code, MET_states, which utilizes the results produced by MET_cross to generate a complete set of state multipoles and coherence and alignment parameters needed to characterize the polarization properties of the radiation emitted in the decay of the metastable atomic states excited in the collision. Included also is a discussion of the relationship between the present codes used to solve the semiclassical multichannel eikonal theory and codes used to implement other semiclassical and quantal scattering theories of electron-atom scattering.