Abstract
We present precise double- to single-photoionization ratios and partial cross sections of lithium in the energy range from 81 to 110 eV. We compare our data with those of ground-state and metastable helium and find a remarkable similarity in the photon energy dependence of the double- to single-photoionization ratio of ground-state He when the energy axis is scaled in units of the energy difference between the double- and single-ionization threshold. We also present a simple explanation for this scaling behavior.
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Schedule a callMore From: Physical review. A, Atomic, molecular, and optical physics
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