2013/08/30 by M M Al Shorman, M F Gharaibeh, Shorman, M M Al +21
Materials Science · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Molecular Clusters (physics.atm-clus) #Atomic and Molecular Physics #Electron and X-Ray Spectroscopy Techniques #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.1308.6795
openalex publication_date 2013/08/30 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
Absolute cross sections for the \it K-shell photoionization of Be-like and Li-like atomic nitrogen ions were measured by employing the ion-photon merged-beam technique at the SOLEIL synchrotron radiation facility in Saint-Aubin, France. High-resolution spectroscopy at nominal resolutions of 38 meV, 56 meV, 111 meV, 133 meV FWHM for Be-like and 125 meV FWHM for Li-like atomic nitrogen ions was achieved for the photon energies ranging from 410 eV up to 460 eV. The experimental measurements are compared with theoretical estimates from the multi-configuration Dirac-Fock (MCDF), R-matrix and an empirical method. The interplay between experiment and theory enabled the identification and characterisation of the strong 1s → 2p resonances features observed in the \it K-shell spectra of each ion and the region around 460 eV for the 1s → 3p resonance of the N3+ ion yielding suitable agreement with experiment.