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Université de Fribourg

Double 1s shell ionization of Si induced in collisions with protons and heavy ions

Kavčič, M. ; Kobal, M. ; Budnar, M. ; Dousse, Jean-Claude ; Tökési, K.

In: Nuclear Instruments and Methods in Physics Research B: Beam Interactions with Materials and Atoms, 2005, vol. 233(1-4), p. 235-239

The double 1s ionization of Si induced in collisions with protons and heavier ions (C, Ne) was studied by measuring the K X-ray emission of a solid Si target. In order to resolve the hypersatellite contributions in the spectra, high-resolution crystal diffractometry was employed yielding subelectronvolt energy resolution. Experimentally obtained hypersatellite yields were used to determine the...

Université de Fribourg

Double-K-shell ionization of Mg and Si induced in collisions with C and Ne ions

Kobal, M. ; Kavčič, M. ; Budnar, M. ; Dousse, Jean-Claude ; Maillard, Yves-Patrick ; Mauron, Olivier ; Raboud, Pierre-Alexandre ; Tökési, K.

In: Physical Review A, 2004, vol. 70, p. 062720-62730

The satellite and hypersatellite K x-ray emission of a thin Mg foil and thick polycrystalline Si target bombarded by 34-MeV C and 50-MeV Ne ions was measured using high-resolution crystal diffractometry. The corresponding projectile reduced velocities v/vK were 1.09 and 0.92 for C ions and 1.02, 0.86 for Ne ions in case of Mg and Si targets, respectively. An energy resolution of approximately 0.5...