Description
Title: Atomic Photoionization Spectra Studied by the Phase-Shifted Multichannel-Quantum Defect Theory: Inter-Series Interactions
Abstract: The use of phase-shifted multichannel quantum defect theory (MQDT) in mathematical formulations for parameterizing resonance structures and analyzing the impact of inter-series interactions on the autoionizing Rydberg spectra are reviewed. The key step in this development is the reformulation of the short-range scattering matrix into a form similar to S = SBSR in scattering theory. Depending on whether autoionizing series converge to the same limit (degenerate) or to different limits (nondegenerate) due to the different nature of the perturbation, formulation takes on different directions and goals. Finding the profile index functions of the autoionizing spectra in their simplest form with the fewest number of parameters is the primary objective for the nondegenerate case, and some results are reviewed. The main goal of research is to isolate the overlapped autoionizing series into the unperturbed autoionizing series for the degenerate case where perturbation acts uniformly throughout the entire series. Some results in that direction are reviewed.
Keywords: phase-shifted multichannel quantum defect theory (MQDT); inter-series interactions; atomic autoionizing spectra
Paper Quality: SCOPUS / Web of Science Level Research Paper
Subject: Physics
Subject Category: Atomic and Molecular Physics, and Optics
Writer Experience: 20+ Years
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