{"doi":"10.1103/physrev.124.1866","title":"Effects of Configuration Interaction on Intensities and Phase Shifts","abstract":"The interference of a discrete autoionized state with a continuum gives rise to characteristically asymmetric peaks in excitation spectra. The earlier qualitative interpretation of this phenomenon is extended and revised. A theoretical formula is fitted to the shape of the $2s2p^{1}P$ resonance of He observed in the inelastic scattering of electrons. The fitting determines the parameters of the $2s2p^{1}P$ resonance as follows: $E=60.1$ ev, $\\ensuremath{\\Gamma}\\ensuremath{\\sim}0.04$ ev, $f\\ensuremath{\\sim}2 \\mathrm{to} 4\\ifmmode\\times\\else\\texttimes\\fi{}{10}^{\\ensuremath{-}3}$. The theory is extended to the interaction of one discrete level with two or more continua and of a set of discrete levels with one continuum. The theory can also give the position and intensity shifts produced in a Rydberg series of discrete levels by interaction with a level of another configuration. The connection with the nuclear theory of resonance scattering is indicated.","journal":"Physical Review","year":1961,"id":835,"datarank":25.24167966135689,"base_score":9.31099985507536,"endowment":9.31099985507536,"self_citation_contribution":1.3966499782613042,"citation_network_contribution":23.845029683095586,"self_endowment_contribution":1.3966499782613042,"citer_contribution":23.845029683095586,"corpus_percentile":98.1,"corpus_rank":710,"citation_count":11058,"citer_count":197,"citers_with_citation_signal":197,"citers_with_endowment":197,"datacite_reuse_total":0,"is_dataset":false,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"1961-12-15","authors":[{"id":11056,"name":"U. Fano","orcid":null,"position":0,"is_corresponding":true}],"reference_count":14,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-03-01T18:20:47.508186Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}