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Abstract <p>The PRIMA programme has been developed for describing single- and multielectron ionization of neutral atoms by ion impact. Within the framework of the quasiclassical approach, combining the deposition energy model and statistical ionization probabilities, the new programme enables the calculation of ionization probabilities and cross sections of atoms by ion impact in the energy range from 1 keV to 10 MeV. As an example of the programme’s operation, calculations of ionization cross sections of neutral xenon by proton impact were performed. A comparison of the ionization cross sections calculated with the PRIMA programme with experimental data and with results obtained using the transport equation over a wide range of projectile ion energies shows that the discrepancies do not exceed a factor of 2–3.</p>

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Multielectron Ionization of Atoms by Ion Impact in the Deposition Energy Model

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • G. I. Andreev,
  • V. L. Bychkov

摘要

Abstract

The PRIMA programme has been developed for describing single- and multielectron ionization of neutral atoms by ion impact. Within the framework of the quasiclassical approach, combining the deposition energy model and statistical ionization probabilities, the new programme enables the calculation of ionization probabilities and cross sections of atoms by ion impact in the energy range from 1 keV to 10 MeV. As an example of the programme’s operation, calculations of ionization cross sections of neutral xenon by proton impact were performed. A comparison of the ionization cross sections calculated with the PRIMA programme with experimental data and with results obtained using the transport equation over a wide range of projectile ion energies shows that the discrepancies do not exceed a factor of 2–3.