• Draganić, I. N.
• Mccammon, D.
• Morgan, K.
• Fogle, M.
• Havener, C. C.
• Seely, D. G.

Abstract

Lyman x-ray spectra following charge exchange between C<SUP>6+</SUP> and H2 are presented for collision velocities between 400 and 2300 km/s (1-30 keV/amu). Spectra were measured by a microcalorimeter x-ray detector capable of fully resolving the C vi Lyman series emission lines though Lyman-δ. The ratios of the measured emission lines are sensitive to the angular momentum l states populated during charge exchange and are used to gauge the effectiveness of different l-distribution models in predicting Lyman emission due to charge exchange. At low velocities, we observe that both single-electron-capture and double-electron-capture autoionization contribute to Lyman emission and that a statistical l distribution best describes the measured line ratios. At higher velocities single-electron capture dominates with the l distribution peaked at the maximum l....

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