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| ID:
498908.0,
MPI für Kernphysik / Precision Spectroscopy and Ultracold Ensembles |
| Photoionization of N3+ and Ar8+ in an electron beam ion trap by synchrotron radiation |
| Authors: | Simon, M. C.; Schwarz, M.; Epp, S. W.; Beilmann, C.; Schmitt, B. L.; Harman, Z.; Baumann, T. M.; Mokler, P. H.; Bernitt, S.; Ginzel, R.; Higgins, S. G.; Keitel, C. H.; Klawitter, R.; Kubicek, K.; Mäckel, V.; Ullrich, J.; Crespo López-Urrutia, J. R. | | Language: | English | | Date of Publication (YYYY-MM-DD): | 2010-03-09 | | Title of Journal: | Journal of Physics B: Atomic, Molecular and Optical Physics | | Journal Abbrev.: | J. Phys. B: At. Mol. Opt. Phys. | | Volume: | 43 | | Issue / Number: | 6 | | Start Page: | 1 | | End Page: | 11 | | Sequence Number of Article: | 065003 | | Copyright: | © 2010 IOP Publishing Ltd | | Review Status: | Peer-review | | Audience: | Experts Only | | Abstract / Description: | Photoionization (PI) of multiply and highly charged ions was studied using an electron beam
ion trap and synchrotron radiation at the BESSY II electron storage ring. The versatile new
method introduced here extends the range of ions accessible for PI investigations beyond
current limitations by providing a dense target of ions in arbitrary, i.e. both low and high
charge states. Data on near-threshold PI of N3+ and Ar8+ ions, species of astrophysical and
fundamental interest, show high resolution and accuracy allowing various theoretical models
to be distinguished, and highlight shortcomings of available PI calculations. We compare our
experimental data with our new fully relativistic PI calculations within a multiconfiguration
Dirac–Fock approach and with other advanced calculations and find generally good
agreement; however, detailed examination reveals significant deviations, especially at the
threshold region of Ar8+. | | External Publication Status: | published | | Document Type: | Article |
| Communicated by: | vogt | | Affiliations: | MPI für Kernphysik/Group of J. Ullrich/Electron Beam Ion Trap ( J.R. Crespo Lopez-Urrutia)
MPI für Kernphysik/ Group of C.H. Keitel
| | External Affiliations: | Max Planck Advanced Study Group, Center for Free-Electron Laser Science, Luruper Chaussee 149,
D-22761 Hamburg, Germany
ExtreMe Matter Institute EMMI, Planckstrasse 1, D-64291 Darmstadt, Germany
| | Identifiers: | DOI:10.1088/0953-4075/43/6/065003 | |
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