Abstract
The K-shell x-rays of Ti, V, Fe, Co, Ni, Cu, and Zn induced by 424-MeV/u C6+ ion impact are measured. It is found that the K x-ray shifts to the high energy side and the intensity ratio of Kβ/Kα is larger than the atomic data, owing to the L-shell multiple-ionization. The x-ray production cross sections are deduced from the experimental counts and compared with the binary encounter approximation (BEA), plane wave approximation (PWBA) and energy-loss Coulomb-repulsion perturbed-stationary-state relativistic (ECPSSR) theoretical predictions. The BEA model with considering the multiple-ionization fluorescence yield is in better consistence with the experimental results. In addition, the cross section as a function of target atomic K-shell binding energy is presented.
Original language | English |
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Article number | 023402 |
Journal | Chinese Physics B |
Volume | 25 |
Issue number | 2 |
DOIs | |
Publication status | Published - 10 Jan 2016 |
Externally published | Yes |
Keywords
- high energy heavy ions
- ionatom collisions
- x-ray emission