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Title: Charge exchange and x-ray emission cross sections for multiply charged ions colliding with H{sub 2}O

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 10 eV/amu (v=0.02 a.u.) to 100 keV/amu (v=2 a.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 et al. [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.
Authors:
 [1] ;  [2]
  1. CONICET and Dto. de Fisica, Universidad Nacional del Sur, 8000 Bahia Blanca (Argentina)
  2. Physics Department, University of Missouri-Rolla, Rolla, Missouri 65401 (United States)
Publication Date:
OSTI Identifier:
21140492
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 77; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.77.022709; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CATIONS; CHARGE EXCHANGE; COMPARATIVE EVALUATIONS; ELECTRON CAPTURE; EMISSION SPECTRA; EV RANGE 10-100; EV RANGE 100-1000; ION-MOLECULE COLLISIONS; K SHELL; KEV RANGE 01-10; KEV RANGE 10-100; LAWRENCE LIVERMORE NATIONAL LABORATORY; MULTICHARGED IONS; OXYGEN; PHOTON EMISSION; TOTAL CROSS SECTIONS; WATER; X RADIATION; X-RAY SPECTRA