https://doi.org/10.1140/epjd/e2016-70133-6
Regular Article
The 2Πg shape resonance of acetylene anion: an investigation with the RAC method*
1
J. HeyrovskýInstitute of Physical Chemistry, Academy of Sciences
of the Czech Republic, v.v.i.,
Dolejškova 3, 18223
Prague 8, Czech
Republic
2
Faculty of Mathematics and Physics, Charles University in
Prague, V Holešovičkách
2, 18000
Prague 8, Czech
Republic
a
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received: 26 February 2016
Received in final form: 3 May 2016
Published online: 5 July 2016
Abstract
Recently developed method of regularized analytic continuation (RAC) is applied to determination of the 2Πg resonance of acetylene anion. The method is based on continuation of the electron affinities calculated for the anion in presence of an external perturbation field. Its independence on the correlation treatment of the many-electron system allows application of accurate coupled-clusters methods for electronic structure calculations utilized in determination of the resonance position and width.
Contribution to the Topical Issue “Advances in Positron and Electron Scattering”, edited by Paulo Limao-Vieira, Gustavo Garcia, E. Krishnakumar, James Sullivan, Hajime Tanuma and Zoran Petrovic.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2016
