Charge Transfer of O5+ and O4+ with CO at keV Energies

Details Charge Transfer of O5+ and O4+ with CO at keV Energies Charge Transfer of O5+ and O4+ with CO at keV Energies

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...567.1272g&link_type=abstract

The Astrophysical Journal, Volume 567, Issue 2, pp. 1272-1275.

Astronomy and Astrophysics

Astronomy

2

Atomic Data, Atomic Processes, Radiation Mechanisms: Nonthermal, Sun: Solar Wind, Ultraviolet: General, X-Rays: General

Scientific paper

Charge transfer emission has been reported to be the dominant source of X-rays in cometary atmospheres. The emission model is based on the estimated charge transfer cross sections of solar wind minor/heavy ions and cometary neutrals. We report the results of our measurements on the absolute total one and multielectron transfer cross sections for Oq+ (q=5, 4) with CO at ~1.5q keV energies using a technique that combines a laser ablation ion source and a reflection time-of-flight mass spectrometer. The total single electron transfer cross sections for O5+ and O4+ ions with CO are 3.42(+/-0.50)×10-15 and 2.91(+/-0.41)×10-15 cm2, respectively. The cross sections for multielectron transfer are 1.15(+/-0.37)×10-15 and 1.03(+/-0.28)×10-15 cm2, respectively.

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