Energy Dependent Relative Cross Sections In Carbon 1s Photoionization

O. Travnikova,M. Patanen,J. Soderstrom,A. Lindblad,J. J. Kas,F. D. Vila,D. Ceolin,C. Nicolas,T. Marchenko,G. Goldsztejn,L. Journel,R. Guillemin,T. X. Carroll,K. J. Borve,P. Decleva,J. J. Rehr,N. Martensson,M. Simon,S. Svensson, L. J. Saethret

31ST INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC XXXI)（2020）

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Abstract

We demonstrate that the possibility of monitoring relative photoionization cross sections over a large photon energy range extending to hard x-rays allows studying and disentangling shake processes and intramolecular inelastic scattering effects. An "EXAFS"-type of oscillatory behaviour of the relative C is cross sections is observed in a wide photon energy range up to 1 keV due to multiple intramolecular elastic scattering of the photoelectron. These effects are also present in solids and constitute a significant part of all elastic and inelastic scattering effects occurring in solids.

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