Year: 1991
Type: article
Abstract: The authors report on single electron capture in slow collisions of doubly charged nitrogen molecules with the rare gases He, Ne and Ar. The vertical double ionization energy of N 2 as well as vertical excitation energies of N 2 2+ have been calculated by means of the multiconfiguration coupled electron pair approximation (MC-CEPA) method. Furthermore, experiments have been carried out applying the technique of translational energy spectroscopy. The energy gain spectra of the resulting N 2 + molecules have been analysed, showing the single electron capture to be dominated by N 2 2+ (X 1 Sigma + g ) projectile ions, as well as by N 2 2+ ions in the low-lying metastable c 3 Sigma + u state. The position of the experimentally observed reaction window is discussed in terms of Franck-Condon transitions and is compared with predictions of classical descriptions.
Authors: H R Koslowski, H Lebius, V Staemmler, R Fink, K Wiesemann, B A Huber
Institution: Ruhr University Bochum
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funder: Deutsche Forschungsgemeinschaft
OpenAlex ID: W2024968443