| Zugriffsnummer | 40132 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | K-shell ionization of heavy hydrogenlike ions |
| Autor(in); Institution |
Novak, Olensandr; National Academy of Sciences of Ukraine, Institute of Applied Physics, Sumy, UKRAINE
Kholodov, Roman; National Academy of Sciences of Ukraine, Institute of Applied Physics, Sumy, UKRAINE
Surzhykov, Andrey; FPM, Fundamentale Physik für Metrologie, PTB-Braunschweig
Artemyev, Anton; Universität Kassel, Institut für Physik and CINSaT, Kassel, GERMANY
Stöhlker, Thomas; Helmholtz-Institut Jena, Jena, GERMANY
|
| Quelle/Jahr | Physical Review A: 97 (2018), 3, 1 - 7 |
| Artikelnummer | 032518 |
| ISSN | 2469-9926 (PRINT) ; 2469-9934 (ONLINE) |
| DOI | |
| Verlag | Woodbury, NY: American Physical Society (APS) |
| Freie Schlagworte | Heavy-ion collisions ; inner-shell ionization ; non-perturbative theory |
| Zusammenfassung | A theoretical study of the K-shell ionization of hydrogenlike 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 Z1≠Z2. 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. |
