Photo-Ionization of Noble Gases

We present here an application of the recently developed hybrid
coupled channels approach to study photo-ionization of noble gas
atoms: Neon and Argon. We first compute multi-photon ionization
rates and cross-sections for these inert gas atoms with our
approach and compare them with reliable data available from
R-matrix Floquet theory. The good agreement between coupled
channels and R-matrix Floquet theory show that our method treats
multi-electron systems on par with the well established R-matrix
theory. We then apply the time dependent surface flux (tSURFF)
method with our approach to compute total and angle resolved
photo-electron spectra from Argon with linearly and circularly
polarized 12 nm wavelength laser fields, a typical wavelength
available from Free Electron Lasers (FELs)