Journal article

Publication year: 2001

Journal: Physical review A

Volume number: 64

Issue number: 6

ISSN: 1050-2947

eISSN: 1094-1622

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

Publisher: 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 Citation style: 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 Citation style: 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