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Target Dependence of Single-Electron-Capture Cross Sections for Slow Be, B, C, Fe, Ni, and W Ions Colliding with Atomic and Molecular Targets

M. Imai, Y. Iriki, A. Itoh

Fusion Science and Technology / Volume 63 / Number 3 / Pages 392-399

May 2013

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Single-electron-capture cross sections 10 for W+ projectile ions on Ar and Kr atomic gas targets at 10 keV (55 eV/u) and on H2, D2, CH4, C2H6, and C3H8 molecular gas targets at between 5.0 and 10 keV (27 and 55 eV/u) were experimentally derived for the first time. With our published single-electron-capture cross sections q q-1 for Beq+, Bq+, Cq+ , Feq+ , Niq+ , and Wq+ (q = 1 for Fe; q = 1,2 for the others) ions in low energy, an attempt was made to draw scaling behavior of single-electron-capture cross sections for such slow low-q ions on target species. Established scaling formulas are found to reproduce the measured cross sections generally within a magnitude and with higher precision for specific initial charge state and target species.

 
 
 
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