The electronic system (2) 
            2 ∑
            + and (1)
            2 of LiCa

Julia Gerschmann; Erik Schwanke; Silke Ospelkaus; Eberhard Tiemann

doi:10.1080/00268976.2022.2122886

The electronic system (2) ² ∑ ⁺ and (1) ² of LiCa

Julia Gerschmann, Erik Schwanke, Silke Ospelkaus, Eberhard Tiemann^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Research › peer review

Abstract

High-resolution Fourier transform spectroscopy and Laser-induced fluorescence have been performed on LiCa in the infrared spectral range. We analyse rovibrational transitions of the (Formula presented.)–(Formula presented.) system of LiCa and find the (Formula presented.) state to be perturbed by spin–orbit coupling to the (Formula presented.) state. We study the coupled system obtaining molecular parameters for the (Formula presented.) and the (Formula presented.) state together with effective spin–orbit and spin–rotation coupling constants. The coupled system has also been evaluated by applying a potential function instead of rovibrational molecular parameters for the state (Formula presented.). An improved analytic potential function of the (Formula presented.) state is derived, due to the extension of the observed rotational ladder.

Original language	English
Article number	e2122886
Journal	Molecular physics
Volume	121
Issue number	17-18
E-pub ahead of print	21 Sept 2022
DOIs	https://doi.org/10.1080/00268976.2022.2122886
Publication status	Published - 2023

Keywords

and vibration–rotation constants
PACS 31.50.-x Potential energy surfaces
PACS 33.15.Mt Rotation
PACS 33.20.-t Molecular spectra
vibration

ASJC Scopus subject areas

Biophysics
Molecular Biology
Condensed Matter Physics
Physical and Theoretical Chemistry

Access to Document

10.1080/00268976.2022.2122886

Cite this

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title = "The electronic system (2) 2 ∑ + and (1) 2 of LiCa",

abstract = "High-resolution Fourier transform spectroscopy and Laser-induced fluorescence have been performed on LiCa in the infrared spectral range. We analyse rovibrational transitions of the (Formula presented.)–(Formula presented.) system of LiCa and find the (Formula presented.) state to be perturbed by spin–orbit coupling to the (Formula presented.) state. We study the coupled system obtaining molecular parameters for the (Formula presented.) and the (Formula presented.) state together with effective spin–orbit and spin–rotation coupling constants. The coupled system has also been evaluated by applying a potential function instead of rovibrational molecular parameters for the state (Formula presented.). An improved analytic potential function of the (Formula presented.) state is derived, due to the extension of the observed rotational ladder.",

keywords = "and vibration–rotation constants, PACS 31.50.-x Potential energy surfaces, PACS 33.15.Mt Rotation, PACS 33.20.-t Molecular spectra, vibration",

author = "Julia Gerschmann and Erik Schwanke and Silke Ospelkaus and Eberhard Tiemann",

note = "Funding information: We submit this article in honor of Wim Ubachs on the occasion of his 65 birthday. We thank Horst Kn{\"o}ckel and Asen Pashov for many helpful discussions and advice during the course of this research.",

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T1 - The electronic system (2) 2 ∑ + and (1) 2 of LiCa

AU - Gerschmann, Julia

AU - Schwanke, Erik

AU - Ospelkaus, Silke

AU - Tiemann, Eberhard

N1 - Funding information: We submit this article in honor of Wim Ubachs on the occasion of his 65 birthday. We thank Horst Knöckel and Asen Pashov for many helpful discussions and advice during the course of this research.

PY - 2023

Y1 - 2023

N2 - High-resolution Fourier transform spectroscopy and Laser-induced fluorescence have been performed on LiCa in the infrared spectral range. We analyse rovibrational transitions of the (Formula presented.)–(Formula presented.) system of LiCa and find the (Formula presented.) state to be perturbed by spin–orbit coupling to the (Formula presented.) state. We study the coupled system obtaining molecular parameters for the (Formula presented.) and the (Formula presented.) state together with effective spin–orbit and spin–rotation coupling constants. The coupled system has also been evaluated by applying a potential function instead of rovibrational molecular parameters for the state (Formula presented.). An improved analytic potential function of the (Formula presented.) state is derived, due to the extension of the observed rotational ladder.

AB - High-resolution Fourier transform spectroscopy and Laser-induced fluorescence have been performed on LiCa in the infrared spectral range. We analyse rovibrational transitions of the (Formula presented.)–(Formula presented.) system of LiCa and find the (Formula presented.) state to be perturbed by spin–orbit coupling to the (Formula presented.) state. We study the coupled system obtaining molecular parameters for the (Formula presented.) and the (Formula presented.) state together with effective spin–orbit and spin–rotation coupling constants. The coupled system has also been evaluated by applying a potential function instead of rovibrational molecular parameters for the state (Formula presented.). An improved analytic potential function of the (Formula presented.) state is derived, due to the extension of the observed rotational ladder.

KW - and vibration–rotation constants

KW - PACS 31.50.-x Potential energy surfaces

KW - PACS 33.15.Mt Rotation

KW - PACS 33.20.-t Molecular spectra

KW - vibration

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