Charge exchange and x-ray emission cross sections for multiply charged ions colliding with H2O

Details Charge exchange and x-ray emission cross sections for multiply charged ions colliding with H2O Charge exchange and x-ray emission cross sections for multiply charged ions colliding with H2O

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008phrva..77b2709o&link_type=abstract

Physical Review A, vol. 77, Issue 2, id. 022709

Physics

10

Charge Transfer, X-Ray Spectra, Absolute And Relative Intensities, Atomic And Molecular Data, Spectra, And Spectral Parameters

Scientific paper

Total and state selective nl -electron capture cross sections are presented for highly charged ions Z=4-10 , 14, 18, and 26 colliding with water molecules. The energy range investigated was from 10eV/amu (v=0.02a.u.)to100keV/amu (v=2a.u.) . An initialization for the 1B1 and 3A1 orbitals of the water molecule is introduced based on the one center expansion of Moccia and compared to our previous studies based on a hydrogenic approximation within the microcanonical ensemble. The Z dependence of the calculated total cross sections is in reasonable agreement with the recent data of Mawhorter [Phys. Rev. A 75, 032704 (2007)] and is improved over previous results. The energy dependence of the n - and l -level populations is investigated. The K -shell x-ray emission cross sections are determined by using the calculated state-selective electron capture results as input and then applying hydrogenic branching and cascading values for the photon emission. Our results compare favorably with experimental data from the KVI-Groningen, Jet Propulsion Laboratory and Lawrence Livermore National Laboratory groups.

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