Journalartikel

Jahr der Veröffentlichung: 2001

Zeitschrift: Physical review A

Bandnummer: 64

Heftnummer: 6

ISSN: 1050-2947

eISSN: 1094-1622

DOI Link: https://doi.org/10.1103/PhysRevA.64.062705

Verlag: American Physical Society

Abstract: 
Unusual resonance features at high energies were recently discovered in the experimental crossed-beams measurements of the electron-impact ionization of Sm12+. Theoretical calculation were able to confirm that they Lire due to deep-core excitation with capture into dielectronic states followed by sequential double Auger decay [K. Aichele et al.. Phys. Rev. Lett. 86, 620 (2001)]. In this paper additional experimental results are presented. showing more resonances in the sing le-ionization cross section. Detailed level-to-level calculations of dielectronic capture provide a clear identification of these resonances, as produced by a 3d-4f excitation vith capture to different nl orbitals followed by sequential emission of mo electrons. By using configuration-average distorted-wave calculations, we estimate the branching ratios for single and double ionization by considering the possible autoionization paths leading to resonant contributions to excitation, single ionization, and double ionization.

Harvard-Zitierstil: Mitnik, D., Griffin, D., Colgan, J., Pindzola, M., Aichele, K., Arnold, W., et al. (2001) Electron-impact ionization of Sm¹²⁺ ions:: Resonances far beyond threshold -: art. no. 062705, PHYSICAL REVIEW A, 64(6), Article 062705. https://doi.org/10.1103/PhysRevA.64.062705

APA-Zitierstil: Mitnik, D., Griffin, D., Colgan, J., Pindzola, M., Aichele, K., Arnold, W., Hathiramani, D., Scheuermann, F., & Salzborn, E. (2001). Electron-impact ionization of Sm¹²⁺ ions:: Resonances far beyond threshold -: art. no. 062705. PHYSICAL REVIEW A. 64(6), Article 062705. https://doi.org/10.1103/PhysRevA.64.062705