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Quantitative reconstruction of atomic orbital densities of neon from partial cross sections

, , , , , and . Phys. Rev. A, 109 (1): 012814 (Jan 23, 2024)
DOI: 10.1103/PhysRevA.109.012814

Abstract

The approach of photoemission orbital tomography, i.e., the orbital density reconstruction from photoemission of planar molecular layers by using a formalism equivalent to a Fourier transformation, is transferred to free atoms. Absolute radial orbital densities of neon 1s, 2s, and 2p orbitals are reconstructed with a central-field one-electron model, using well-known atomic photoionization data. The model parameters are optimized by a Markov chain Monte Carlo method with Bayesian inference from which uncertainties for the reconstructed orbital densities are derived. The presented model opens the path for photoemission orbital tomography as a powerful tool, as well as for a quantitative analysis.

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