Revealing the role of electron correlation in sequential double ionization
Abstract
The experimental observations of sequential double ionization (SDI) of Ar [A. N. Pfeiffer et al., Nature Phys. 7, 428 (2011)], such as the four-peak momentum distribution and the ionization time of the first and second electrons, are investigated and reproduced with a quantum model by including and excluding the e-e correlation effect. Based on the comparison of experiment and simulation, the role of e-e correlation in SDI is discussed. It is shown that the inclusion of e-e correlation is necessary to reproduce the momentum distribution of electrons.
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