X-ray emission measurements following charge exchange between O$^{8+}$ and Kr

Le résumé fourni par la source

Lyman x-ray spectra following charge exchange between C6+ 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 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. PACS numbers: 34.70.+e, 32.30.-r, 95.30.-k ∗fogle@physics.auburn.edu

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