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

Kavčič, M.; Kobal, M.; Budnar, M.; Dousse, J.-Cl.; Tőkési, K.

doi:10.1016/j.nimb.2005.03.113

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Double K shell ionization produced by fast ions with energies in the tens of MeV/u has been extensively studied by observing the K-shell hyper-satellite lines 31 – 34 . The multiple ionization induced by low-energy light ions has also been reported by comparing the relative intensity ratio of subshell x-rays 35 – 37 . It is proposed that the same is anticipated for the bombardment of high energy heavy ions with energies in hundreds of MeV/u.…”

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confidence: 97%

“…This can be determined by measuring the blue shift of x-ray energy using a low-resolution semiconductor detector, or analyzing the satellite and hyper-satellite of x-ray spectra with a high-resolution crystal spectrometer. Double K shell ionization produced by fast ions with energies in the tens of MeV/u has been extensively studied by observing the K-shell hyper-satellite lines [31][32][33][34] . The multiple ionization induced by low-energy light ions has also been reported by comparing the relative intensity ratio of subshell x-rays [35][36][37] .…”

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Au L-shell x-ray emission induced by 154.3–423.9 MeV/u C6+ ions

Zhou

Wei

Cheng

et al. 2022

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The L-shell x-ray emissions of gold are investigated for the bombardment of high energy C6+ ions in the high energy region of 154.3–423.9 MeV/u. Due to the multiple ionization of outer-shell electrons at the movement of L x-ray emission, the blue shift of the experimental x-ray energy and an enhancement of the relative intensity ratios of Lι, Lβ–Lα x rays are observed. Using the improved thin target formula and considering the effect of multiple ionization on atomic parameters, the L-subshell x-ray production cross sections are extracted from the counts and compared with the theoretical estimations of BEA, PWBA and ECPSSR. It is found that the relative corrections of ECPSSR on PWBA can be ignored in the present experimental energy region. The calculations of PWBA and ECPSSR are almost identical and both are larger than the experimental results. The BEA is in better agreement with the experiment as a whole.

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Section: Introductionmentioning

confidence: 97%

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confidence: 99%

Au L-shell x-ray emission induced by 154.3–423.9 MeV/u C6+ ions

Zhou

Wei

Cheng

et al. 2022

Sci Rep

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Cross section ratios of double-to-single K-shell ionization induced by electron impact in metallic Sc, Cr and Cu targets

Zeeshan

Dousse

Hoszowska

2019

Journal of Electron Spectroscopy and Related Phenomena

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The double K-shell ionization of Sc, Cr and Cu induced by electron impact was investigated via high energy resolution measurements of the Ka diagram transitions and the transitions resulting from the radiative decay of K-shell double vacancy states, namely the Kha hypersatellites. For Sc, the Kj3 diagram lines and Khj3 hypersatellites were also measured. The measurements were carried out in-house with a von Hamos curved crystal spectrometer operated in the so-called direct geometry in which the anodes of Sc, Cr and Cu X-ray tubes were used as targets. For each element, the electron kinetic energy was chosen to be about twice the threshold energy for the double l s ionization. The double-to-single ionization cross-sections ratios PKK were deduced from the hypersatellite-to-diagram line yield ratios, corrected beforehand for the self-absorption of the X-rays in the target and the energy dependent efficiency of the spectrometer. The obtained ratios are discussed and compared to other PKK values found in the literature for electrons and photons.

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