2025/04/07 by A. N. Hopersky, Hopersky, Alexey N., A. M. Nadolinsky +5
Physics and Astronomy · #00A81 #Atomic and Molecular Physics #Crystallography and Radiation Phenomena #FOS: Physical sciences #Optics (physics.optics) #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.2504.05290
openalex publication_date 2025/04/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The analytical structure and absolute values of the generalized cross-section of the two-photon resonance single ionization of the K-shell of a heavy neon-like ion of an iron atom (Fe16+) were theoretically predicted. A pronounced resonant subthreshold structure of the generalized cross-section and the effect of destructive quantum interference of the probability amplitudes of radiation transitions into virtual excited states of p-symmetry have been established. The presence of a valence 2p6-shell in the ion backbone causes the production of an additional giant resonance of the generalized cross-section as the effect of the "reverse" hard X-ray emission of Kα-type 1s2(2s2)2p5 + ℏω→ 1s(2s2)2p6. A scheme of the proposed experiment with linearly polarized X-ray photons is presented to verify the theoretical results obtained.