State-Selective Charge Exchange from H(1s), H(N = 2), Li and Na Targets by Very Highly Charged Ions
In order to provide information for charge exchange spectroscopy diagnostics in new, high temperature tokamak plasmas, n-level state-selective electron capture cross sections are presented for very highly charged ions with charge states q ≥ 10. Fully stripped ions with charges of 10+, 18+, 26+, 54+ and 92+ are considered in order to provide scaling information over a broad range. The H(1s) and H(n = 2) targets are evaluated at 1, 10 and 100 keV/amu, i.e. plasma core temperatures to those encountered during neutral beam heating. For use in pellet diagnostics, cross sections are given for Li and Na targets at 10 keV/amu. These latter targets also provide a means to experimentally test the accuracy of the H(n = 2) results since they are pseudo-one-electron atoms with ionization energies close to that of excited hydrogen.
S. Otranto and R. E. Olson, "State-Selective Charge Exchange from H(1s), H(N = 2), Li and Na Targets by Very Highly Charged Ions," Journal of Physics B: Atomic, Molecular and Optical Physics, Institute of Physics - IOP Publishing, Jul 2010.
The definitive version is available at http://dx.doi.org/10.1088/0953-4075/43/14/144004
National Agency for the Promotion of Science and Technology (Argentina)
National Council of Scientific and Technical Investigations (Argentina)
Keywords and Phrases
Monte Carlo Methods; Plasmas; Targets; Charge transfer; Fusion reactors; Ion exchange; Ions; Pelletizing; Xenon
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