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Title: X-Ray Emission Cross Sections following Charge Exchange by Multiply-Charged Ions of Astrophysical Interest

Journal Article · · Journal of Physics: Conference Series, vol. 58, N/A, November 30, 2006, pp. 165
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The CTMC method is used to calculate emission cross sections following charge exchange processes involving highly charged ions of astrophysical interest and typical cometary targets. Comparison is made to experimental data obtained on the EBIT-I machine at Lawrence Livermore National Laboratory LLNL for O{sup 8+} projectiles impinging on different targets at a collision energy of 10 eV/amu. The theoretical cross sections are used together with ion abundances measured by the Advanced Composition Explorer to reproduce cometary spectra. Discrepancies due to different estimated delays of solar wind events between the comet and the Earth-orbiting satellite are discussed.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
908097
Report Number(s):
UCRL-JRNL-229081; TRN: US0703615
Journal Information:
Journal of Physics: Conference Series, vol. 58, N/A, November 30, 2006, pp. 165, Vol. 58
Country of Publication:
United States
Language:
English

References (11)

Discovery of X-ray and Extreme Ultraviolet Emission from Comet C/Hyakutake 1996 B2 journal October 1996
Charge-transfer and impact-ionization cross sections for fully and partially stripped positive ions colliding with atomic hydrogen journal August 1977
Charge exchange between H ( 1 s ) and fully stripped heavy ions at low-keV impact energies journal April 1976
Molecular treatment of electron capture in collisions of O 5 + ions with H atoms at energies from 6 eV/amu to 10 keV/amu: Transfer-excitation processes journal November 1993
State selective electron capture into nl subshells in slow collisions of C 5+ and N 6+ with He and H 2 studied by photon emission spectroscopy journal May 1991
Charge Exchange-Induced X-Ray Emission from Comet C/1999 S4 (LINEAR) journal May 2001
X-ray emission cross sections following charge exchange by multiply charged ions of astrophysical interest journal February 2006
Comet Hyakutake x-ray source: Charge transfer of solar wind heavy ions journal January 1997
Measurement of Charge Exchange and X-Ray Emission Cross Sections for Solar Wind–Comet Interactions journal April 2000
Experimental investigation of the processes determining x-ray emission intensities from charge-exchange collisions journal May 2001
Electron transfer from hydrogenlike atoms to partially and completely stripped projectiles: CDW approximation journal June 1991

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Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
74 ATOMIC AND MOLECULAR PHYSICS
CHARGE EXCHANGE
COMETS
CROSS SECTIONS
LAWRENCE LIVERMORE NATIONAL LABORATORY
PROJECTILES
SATELLITES
SOLAR WIND
SPECTRA
TARGETS
X-RAY EMISSION ANALYSIS