Université de Fribourg

High-resolution KMM radiative Auger x-ray emission spectra of calcium induced by synchrotron radiation

Cao, Wei ; Kavčič, Matjaz ; Dousse, Jean-Claude ; Berset, Michel ; Bučar, K. ; Budnar, M. ; Fennane, Karima ; Hoszowska, Joanna ; Maillard, Yves-Patrick ; Szlachetko, Jakub ; Szlachetko, Monika ; Žitnik, M.

In: Physical Review A, 2011, vol. 83, no. 4, p. 042513

The KMM radiative Auger (RA) x-ray spectra of solid Ca were induced by monochromatic synchrotron radiation and measured with a high-resolution von Hamos bent crystal spectrometer. Two excitation energies were employed, one in the near K threshold region and the second well above the K absorption edge. The KMM RA spectral structure and relative intensity with respect to the diagram ...

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...