K-shell ionization of heavy hydrogen-like ions
| Autor: | Th. Stöhlker, A. N. Artemyev, Andrey Surzhykov, O. Novak, R. Kholodov |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Physics
Atomic Physics (physics.atom-ph) Electron shell FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas Ion Physics - Atomic Physics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Ionization 0103 physical sciences Atomic physics 010306 general physics |
| Popis: | A theoretical study of the K-shell ionization of hydrogen-like ions, colliding with bare nuclei, is performed within the framework of the time-dependent Dirac equation. Special emphasis is placed on the ionization probability that is investigated as a function of impact parameter, collision energy and nuclear charge. To evaluate this probability in a wide range of collisional parameters we propose a simple analytical expression for the transition amplitude. This expression contains three fitting parameters that are determined from the numerical calculations, based on the adiabatic approximation. In contrast to previous studies, our analytical expression for the transition amplitude and ionization probability accounts for the full multipole expansion of the two-center potential and allows accurate description of nonsymmetric collisions of nuclei with different atomic numbers, $Z_1 \neq Z_2$. The calculations performed for both symmetric and asymmetric collisions indicate that the ionization probability is reduced when the difference between the atomic numbers of ions increases. 8 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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