Abstract

We report measurements of photon emission cross sections following electron capture of C2+, N3+, N4+ and O3+ ions (obtained from an ECR ion source) in collision with ground state lithium atoms at keV energies. We examine the sources of error and obtain best estimates of the relative values of the cross sections having accuracies in the range from 15% to 50%. The accuracy of the absolute cross sections may be lower for capture by N3+ and N4+ ions because of the uncertainty in the fraction of metastable ions. We discuss this problem.

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