Charge-Exchange Emission from Hydrogen-Like Carbon Ions Colliding with Water Molecules

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Abstract

Absolute Extreme Ultraviolet emission cross-sections have been measured for collisions between C5+ and H2O in the range of 0.113 to 3.75 keV/amu (170-979 km/s). These results are used to derive velocity-dependent triplet-to-singlet ratios and emission cross-sections of the Cv K-series following single-electron capture. Comparison with existing measurements of integral charge-changing cross-sections indicates that auto-ionizing multi-electron capture is a significant reactions channel. This reaction may indirectly populate the n=2 states and thus add strength to the K alpha emission of Cv ions thereby co-determining the hardness ratio of K-series emission of Cv.

Original languageEnglish
Article number17
Number of pages11
JournalAtoms
Volume7
Issue number1
DOIs
Publication statusPublished - 1-Feb-2019

Keywords

  • atomic data
  • molecular data
  • methods
  • laboratory
  • atomic
  • solar wind
  • comets
  • general
  • planets and satellites
  • aurorae
  • COMETARY X-RAY
  • SELECTIVE ELECTRON-CAPTURE
  • HELIUM-LIKE IONS
  • SOLAR-WIND
  • SLOW COLLISIONS
  • CROSS-SECTIONS
  • XMM-NEWTON
  • SPECTROSCOPY
  • ABUNDANCES

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