Nonlinear phenomena in atoms when interacting with VUV and soft X-ray radiation
DOI:
https://doi.org/10.24144/2415-8038.2012.32.67-72Keywords:
Nonlinear phenomena, Photoionization of atoms, X-rays, Nondipole interaction, Free-electron lasersAbstract
Theoretical description of photoelectron angular distributions in the simplest nonlinear atomic processes in X-ray and VUV is extended beyond the dipole approximation. On the example of sequential two-photon double ionization of neon it is shown that the contribution of the electric quadrupole transitions can be observed in already operating X-ray free electron lasers.References
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