Abstract
We measured the vacuum ultraviolet (VUV) emission spectra following charge transfer collisions of Snq+ (q = 3-6) with neutral rare gas targets at collision energies of 50-100 keV. We identified some of emission lines from reported energy levels. Several lines were observed in collisions of different charge states of ions. This finding means that the multiple-electron capture processes can take place effectively in our experiment. Significant target dependences were observed in the spectra with the projectile of Sn4+ and Sn6+.
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