All-electron, density-functional-based method for angle-resolved tunneling ionization in the adiabatic regime

We develop and test a method that integrates many-electron weak-field asymptotic theory (ME-WFAT) [Phys. Rev. A 89, 013421 (2014)] in the integral representation (IR) into density functional (DFT) framework. In particular, we present modifications of formula IR ME-WFAT to incorporate potential terms unique DFT. By solving an adiabatic rate equation for angle-resolved ionization yield our DFT-based method, show results are excellent agreement with those real-time time-dependent (RT-TDDFT) simulations NO, OCS, CH$_3$Br, CH$_3$Cl interacting one- two- color laser fields fundamental wavelength $800$ nm. This is significant because WFAT calculations take only small fraction time full TDDFT calculations. These suggest region commonly used strong-field experiments ($800$ nm longer), treatment can be rapidly screen properties large number molecules as function alignment or orientation between molecule strong field.