Energy-loss enhancement and charge-equilibration time for highly charged xenon ions at near-Bohr velocity in solids

Z. Y. Song, Z. W. Wu, Z. H. Yang, B. L. Zhang, and G. Q. Xiao

Phys. Rev. A 106, 062817 – Published 19 December 2022

Abstract

We probe the energy-loss enhancement in preequilibration and the charge-equilibration time for highly charged Xe ions $(q_{in} = 15 - 26)$ at near-Bohr velocity impinging on an Al target by measuring the dependence of the Xe $L$ -shell x-ray yield on the initial charge state of the ions. The present results are found to be very consistent with those obtained in ion-transmission thin-foil experiments. The charge-equilibrium time is measured in the near-Bohr velocity region of highly charged ions in solids. Moreover, for the present collision system it is demonstrated by measuring the inner-shell x rays that the ionization of the inner-shell electrons of the projectile ions starts to contribute to ion energy loss at near-Bohr velocity.

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Received 26 June 2022
Accepted 5 December 2022

DOI:https://doi.org/10.1103/PhysRevA.106.062817

Physics Subject Headings (PhySH)

Atom or molecule scattering from surfaces Electronic excitation & ionization

Atomic, Molecular & Optical

Authors & Affiliations

Z. Y. Song ^1,2,*, Z. W. Wu^3,4,5, Z. H. Yang^1,†, B. L. Zhang¹, and G. Q. Xiao^1,2

¹Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
²School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
³Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
⁴Helmholtz-Institut Jena, Fröbelstieg 3, D-07743 Jena, Germany
⁵GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany

^*songzhy@impcas.ac.cn
^†z.yang@impcas.ac.cn

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Vol. 106, Iss. 6 — December 2022

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