Abstract.
Al K-shell X-ray yields are measured with highly charged Arq+ ions (q=12–16) bombarding against aluminium. The energy range of the Ar ions is from 180 to 380 keV. K-shell ionization cross sections of aluminium are also obtained from the yields data. The experimental data is explained within the framework of 2pπ -2pσ rotational coupling. When Ar ions with 2p-shell vacancies are incident on aluminium, the vacancies begin to reduce. Meanwhile, collisions against Al atoms lead to the production of new 2p-shell vacancies of Ar ions. These Ar 2p-shell vacancies will transfer to the 1s orbit of an Al atom via 2pπ-2pσ rotational coupling leading to the emission of a K-shell X-ray of aluminiun. A model is constructed based on the base of the above physical scenario. The calculation results of the model are in agreement with the experimental results.
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Chen, X., Shao, J., Yang, Z. et al. K-shell ionization cross section of aluminium induced by low-energy highly charged argon ions. Eur. Phys. J. D 41, 281–286 (2007). https://doi.org/10.1140/epjd/e2006-00233-9
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DOI: https://doi.org/10.1140/epjd/e2006-00233-9