In: Physical Review A, 2018, vol. 98, no. 1, p. 012705
We report on the radiative decay of double K-shell vacancy states produced in solid Ca, V, Fe, and Cu targets by impact with about 10 MeV/amu C and Ne ions. The resulting K hypersatellite x-ray emission spectra were measured by means of high- energy-resolution spectroscopy using a von Hamos bent crystal spectrometer. The experiment was carried out at the Philips variable energy cyclotron of...
|
In: Journal of Physics: Conference Series, 2015, vol. 635, no. 2, p. 022054
We report on high energy resolution measurements of the Kα hypersatellite x-ray spectra of Ca, V, Fe and Cu induced by impact with 144 MeV C and 180 MeV Ne ions.
|
In: Physical Review A, 2014, vol. 88, no. 5, p. 052505
A detailed investigation of the Lα1,2 (L3→M4,5) and Lβ1 (L2→M4) x-ray satellite and hypersatellite structures in zirconium, molybdenum, and palladium atoms multiply ionized by impact with 278.6-MeV oxygen ions is reported. The x-ray spectra were measured with a high-resolution von Hamos bent crystal spectrometer. For the interpretation of the complex spectral features, relativistic...
|
In: Physical Review A, 2010, vol. 91, no. 06, p. 064702
An observation of the internal structure of the L-shell hypersatellite x rays resulting from the one-photon decay of L⁻² double-vacancy states in palladium multiply ionized by oxygen ions is reported. The Pd L₃→M4,5 x-ray spectrum was measured with a von Hamos high-resolution crystal spectrometer. The complex shape of the observed spectrum could be interpreted in detail using...
|
In: The European Physical Journal D, 2010, p. -
The multiple ionization of the L- and M-shells of Pd by fast oxygen ions has been studied by measuring with high-resolution the satellite structures of the Lα1,2 X-ray transitions. Relativistic multi-configuration Dirac-Fock (MCDF) calculations were used to interpret the complex X-ray spectrum, allowing to derive the number of L- and M-shell spectator vacancies at the moment of the...
|
In: Journal of Physics: Conference Series, 2009, vol. 194, p. 152012
The interpretation of L-shell satellites and hypersatellites for Lα1,2 (L₃→M4,5) and Lβ₁ (L₂→M₄) x-ray transitions in zirconium multiply ionized by oxygen and neon ions is reported. The x-ray spectra were measured with a high-resolution von Hamos spectrometer and interpreted in terms the relativistic...
|
In: Journal of Physics: Conference Series, 2007, vol. 58, no. 1, p. 295
We demonstrate that in order to interpret the x-ray satellite structure of Pd Lα1,2(L₃M4,5) transitions excited by fast O ions, which was measured using a high-resolution von Hamos crystal spectrometer, the vacancy rearrangement processes, taking place prior to the x-ray emission, have to be taken into account. The measured spectra were compared with the predictions...
|
In: Brazilian Journal of Physics, 2006, vol. 36, no. 2B, p. 546-549
|
In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2005, vol. 235 (1-4), p. 110-115
K-X-ray spectra of Zr, Nb, Mo and Pd targets bombarded with 250 MeV carbon and 360 MeV oxygen ions are studied with high resolution diffraction spectrometry. Relative yields and natural widths of the Khα1,2 hypersatellite lines are determined and compared with those of the diagram lines. The widths of Khα1,2 lines are compared with the new ...
|
Thèse de doctorat : Université de Fribourg, 2003 ; no 1399.
Ce travail de doctorat en physique atomique expérimentale contient trois parties distinctes ayant cependant comme point commun la spectroscopie X de haute résolution. Les mesures des trois projets ont été effectuées en effet au moyen d’un spectromètre à cristal incurvé de réflexion de type von Hamos. Les deux premiers sujets concernent l’étude des mécanismes conduisant à des...
|
