Journal article

Publication year: 2014

Journal: Physical review A

Volume number: 90

Issue number: 1

ISSN: 1050-2947

eISSN: 1094-1622

DOI Link: https://doi.org/10.1103/PhysRevA.90.010701

Publisher: American Physical Society

Abstract: 
The role of hollow states intermediately produced in electron-impact ionization of metastable He-like N5+(1s2s S-3(1)) ions has been investigated in detail. A crossed-beam setup and suitable experimental techniques were employed for the measurement of accurate absolute cross sections and precise energy-scan data. Fine structures arising from K-shell excitations and associated resonances have been observed for this two-electron ion with less than +/- 0.5 eV uncertainty on the energy scale. Fine details, such as interference of the reaction pathways of direct ionization and excitation with capture of the incident electron followed by double-Auger decay, could be revealed. Ab initio calculations based on the convergent close coupling (CCC) approach are in good agreement with the experiment.

Harvard Citation style: Müller, A., Borovik, A., Huber, K., Schippers, S., Fursa, D. and Bray, I. (2014) Double − K − vacancy states in electron-impact single ionization of metastable two-electron 𝑁⁢5+⁢(1⁢𝑠⁢2⁢𝑠 3⁢𝑆1) ions, Physical review A, 90(1), Article 010701. https://doi.org/10.1103/PhysRevA.90.010701

APA Citation style: Müller, A., Borovik, A., Huber, K., Schippers, S., Fursa, D., & Bray, I. (2014). Double − K − vacancy states in electron-impact single ionization of metastable two-electron 𝑁⁢5+⁢(1⁢𝑠⁢2⁢𝑠 3⁢𝑆1) ions. Physical review A. 90(1), Article 010701. https://doi.org/10.1103/PhysRevA.90.010701