Benchmark data for elastic and inelastic electron collisions with krypton atoms

We have further extended our recent work [1] on elastic and inelastic electron scattering from Kr atoms and obtained new datasets for angle-differential cross sections at selected scattering angles as a function of the projectile energy. Our energy resolution of about 10~meV made it possible to separate many structures and to analyze the resonances in detail. Comparison of the measured data with theoretical predictions from a fully relativistic Dirac $B$-spline $R$-matrix (DBSR) method~[2] shows very encouraging agreement.\\[4pt] [1] T.H.~Hoffmann, M.-W.~Ruf, H.~Hotop, O.~Zatsarinny, K.~Bartschat, and M.~Allan, J. Phys. B {\bf 43} (2010) 085206.\\[0pt] [2] O.~Zatsarinny and K.~Bartschat, Phys. Rev. A~{\bf 77} (2008) 062701.