Double K-shell photoionization and hypersatellite x-ray transitions of 12{<=}Z{<=}23 atoms

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.063408· OSTI ID:21528908

Hoszowska, J; Dousse, J -Cl; Cao, W; Fennane, K; Kayser, Y; Szlachetko, M; Szlachetko, J; Kavcic, M ^[1]

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1. Department of Physics, University of Fribourg, CH-1700 Fribourg (Switzerland)

Single-photon double K-shell ionization of low-Z neutral atoms in the range 12{<=}Z{<=}23 is investigated. The experimental method was based on measurements of the high-resolution K{alpha}{sup h} hypersatellite x-ray spectra following the radiative decay of the K-shell double-vacancy states excited by monochromatic synchrotron radiation. The photon energy dependence of the double K-shell ionization was measured over a wide range of photon energies from threshold up to and beyond the maximum of the double-to-single photoionization cross section ratios. From the high-resolution x-ray emission spectra the energies and linewidths of the hypersatellite transitions, as well as the K{alpha}{sub 1}{sup h}:K{alpha}{sub 2}{sup h} intensity ratios, were determined. The relative importance of the initial-state and final-state electron-electron interactions to the K-shell double photoionization is addressed. Physical mechanisms and scaling laws of the K-shell double photoionization are examined. A semiempirical universal scaling of the double-photoionization cross sections with the effective nuclear charge for neutral atoms in the range 2{<=}Z{<=}47 is established.

• OSTI ID: 21528908
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC NUMBER
ATOMS
BOSONS
BREMSSTRAHLUNG
COLLISIONS
COUPLING
CROSS SECTIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DECAY
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELECTRON-ELECTRON COLLISIONS
ELECTRON-ELECTRON COUPLING
ELECTRON-ELECTRON INTERACTIONS
ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
EMISSION SPECTRA
ENERGY DEPENDENCE
INTERACTIONS
IONIZATION
IONIZING RADIATIONS
K SHELL
LEPTON-LEPTON INTERACTIONS
LINE WIDTHS
MASSLESS PARTICLES
MONOCHROMATIC RADIATION
PARTICLE DECAY
PARTICLE INTERACTIONS
PHOTOIONIZATION
PHOTONS
POINT DEFECTS
RADIATIONS
RADIATIVE DECAY
RESOLUTION
SCALING LAWS
SPECTRA
SYNCHROTRON RADIATION
VACANCIES
X RADIATION
X-RAY SPECTRA