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Influence of relativistic effects on electron-loss cross sections of heavy and superheavy ions colliding with neutral atoms

  • Atoms, Molecules, Optics
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Abstract

The influence of relativistic effects, such as relativistic interaction and relativistic wave functions, on the electron-loss cross sections of heavy and superheavy atoms and ions (atomic number Z ≳ 92) colliding with neutral atoms is investigated using a newly created RICODE-M computer program. It is found that the use of relativistic wave functions changes the electron-loss cross section values by about 20–30% around the cross-section maximum compared to those calculated with nonrelativistic wave functions. At relativistic energies E ≥ 200 MeV/u, the relativistic interaction between colliding particles leads to a quasiconstant behavior of the loss cross sections σ relEL ∼ const, to be compared with the Born asymptotic law σ BEL ∼ lnE/E.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russia

    I. Yu. Tolstikhina, S. N. Andreev & V. P. Shevelko

  2. Moscow Institute of Physics and Technology, Dolgoprudny, Moscow oblast, 141700, Russia

    I. Yu. Tolstikhina

  3. Department of Physics, St. Petersburg State University, St. Petersburg, 198504, Russia

    I. I. Tupitsyn

Authors
  1. I. Yu. Tolstikhina
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  2. I. I. Tupitsyn
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  3. S. N. Andreev
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  4. V. P. Shevelko
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Correspondence to V. P. Shevelko.

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Tolstikhina, I.Y., Tupitsyn, I.I., Andreev, S.N. et al. Influence of relativistic effects on electron-loss cross sections of heavy and superheavy ions colliding with neutral atoms. J. Exp. Theor. Phys. 119, 1–7 (2014). https://doi.org/10.1134/S1063776114060211

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  • DOI: https://doi.org/10.1134/S1063776114060211

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