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Journal Article

Excitation of heavy hydrogenlike ions by light atoms in relativistic collisions with large momentum transfers

MPS-Authors
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Najjari,  B.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Voitkiv,  A. B.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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http://link.aps.org/doi/10.1103/PhysRevA.85.052712
(Publisher version)

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Citation

Najjari, B., & Voitkiv, A. B. (2012). Excitation of heavy hydrogenlike ions by light atoms in relativistic collisions with large momentum transfers. Physical Review A, 85(5): 052712, pp. 1-7. doi:10.1103/PhysRevA.85.052712.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-ABB1-D
Abstract
We present a theory for excitation of heavy hydrogenlike projectile ions by light target atoms in collisions where the momentum transfers to the atom are very large on the atomic scale. It is shown that in this process the electrons and the nucleus of the atom behave as (quasi-) free particles with respect to each other and that their motion is governed by the field of the nucleus of the ion. The effect of this field on the atomic particles can be crucial for the contribution to the excitation of the ion caused by the electrons of the atom but, because of large nuclear mass, may be neglected in the contribution to the excitation due to the nucleus of the atom. The theory is applied to calculate excitation of Bi82+(1s) ions in collisions with hydrogen.