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X-Ray Absorption Spectrum of the N2+ Molecular Ion

Lindblad, R. LU ; Kjellsson, L. LU ; Couto, R. C. ; Timm, M. ; Bülow, C. ; Zamudio-Bayer, V. ; Lundberg, M. ; Von Issendorff, B. ; Lau, J. T. and Sorensen, S. L. LU , et al. (2020) In Physical Review Letters 124(20).
Abstract

The X-ray absorption spectrum of N2+ in the K-edge region has been measured by irradiation of ions stored in a cryogenic radio frequency ion trap with synchrotron radiation. We interpret the experimental results with the help of restricted active space multiconfiguration theory. Spectroscopic constants of the 1σu-1 ς2u+ state, and the two 1σu-13σg-11πg Π2u states are determined from the measurements. The charge of the ground state together with spin coupling involving several open shells give rise to double excitations and configuration mixing, and a complete breakdown of the orbital picture for higher lying core-excited states.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
124
issue
20
article number
203001
publisher
American Physical Society
external identifiers
  • pmid:32501042
  • scopus:85085842970
ISSN
0031-9007
DOI
10.1103/PhysRevLett.124.203001
language
English
LU publication?
yes
id
0a6dc8f2-53c1-4cc8-b6bb-1db34b67eaec
date added to LUP
2020-12-28 11:25:45
date last changed
2024-04-03 19:41:48
@article{0a6dc8f2-53c1-4cc8-b6bb-1db34b67eaec,
  abstract     = {{<p>The X-ray absorption spectrum of N2+ in the K-edge region has been measured by irradiation of ions stored in a cryogenic radio frequency ion trap with synchrotron radiation. We interpret the experimental results with the help of restricted active space multiconfiguration theory. Spectroscopic constants of the 1σu-1 ς2u+ state, and the two 1σu-13σg-11πg Π2u states are determined from the measurements. The charge of the ground state together with spin coupling involving several open shells give rise to double excitations and configuration mixing, and a complete breakdown of the orbital picture for higher lying core-excited states.</p>}},
  author       = {{Lindblad, R. and Kjellsson, L. and Couto, R. C. and Timm, M. and Bülow, C. and Zamudio-Bayer, V. and Lundberg, M. and Von Issendorff, B. and Lau, J. T. and Sorensen, S. L. and Carravetta, V. and Ågren, H. and Rubensson, J. E.}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  number       = {{20}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{X-Ray Absorption Spectrum of the N2+ Molecular Ion}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.124.203001}},
  doi          = {{10.1103/PhysRevLett.124.203001}},
  volume       = {{124}},
  year         = {{2020}},
}