Extreme ultraviolet (EUV) spectroscopy as a probe of multicharged ion interactions

Measurements are reported of extreme ultraviolet (EUV) spectra recorded in the wavelength region 10--108 nm, produced by collisions of multiply charged carbon and oxygen ions with He, H2O, CO 2 at energies in the range from 20 to 95 keV. Line emission cross-sections were deduced by normalization of the data to published absolute data for collisions with He. The measurements provide laboratory simulations of collisions of ions from the solar wind that occur in comet tails, which produce EUV light. They also provide data for tests of our fundamental understanding of classical models for such processes. The performances of a glass capillary converter device and of a position-sensitive detector system in improving the efficiency of the collision spectroscopy apparatus have been demonstrated and quantified.