Relativistic calculations of M-shell photoionization and X-ray production cross-sections for Hg at 5.96 keV excitation energy. (February 2015)

• Record Type: Journal Article
• Authors: Sampaio, J.M.; Madeira, T.I.; Parente, F.; Indelicato, P.; Santos, J.P.; Marques, J.P.
• Is Part Of: Radiation physics and chemistry. Volume 107(2015:Feb.)
• Page Start: 36
• Page End: 39
• Publication Date: 2015-02
• Subjects: Photoionization -- X-ray production -- Cross-sections -- Dirac–Fock calculations; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2014.09.006
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: In this work we calculate photoionization and X-ray production cross-sections (XPCS) of M-shell vacancies in Hg at an incident photon energy of 5.96 keV (low energy X-rays of 55 Fe radioactive source) using the Dirac–Fock method. Calculations are performed in single configuration approach with the Breit interaction and some vacuum polarization corrections included in the self-consistent method. Higher-order retardation corrections, self-energy and other vacuum polarization effects were also included as perturbations. Fluorescence and Coster–Kronig yields necessary to derive XPCS were obtained in a previous work using the exact same approach. Abstract : Highlights: We compute X-ray production cross-sections (XPCS) in Hg at 5.96 keV. XPCS are obtained with all parameters derived consistently in the same approach. Calculations are done using the state-of-the-art relativistic method. Results are in good agreement with experimental values.