Triple photoionization of Lithium near threshold
Abstract
Solving the full classical four-body Coulomb problem numerically using a Wigner initial distribution we formulate a classical-quantum hybrid approach to study triple ionization by single photon absorption from the Li ground state in the threshold region. We confirm the Wannier threshold law σ Eα and we show that the α determined in the interval between 2-5 eV deviates from the analytical threshold value of 2.16 which we find in the interval between 0.1-2 eV.
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