The E3Σ1+ (63S1)←A3Π0+(53P1) transition in CdAr revisited: The spectrum and new analysis of the E3Σ1+ Rydberg state interatomic potential

T Urbańczyk; M Krośnicki; A Kędziorski; J Koperski

doi:10.1016/j.saa.2018.01.075

The E³Σ₁⁺ (6³S₁)←A³Π₀₊(5³P₁) transition in CdAr revisited: The spectrum and new analysis of the E³Σ₁⁺ Rydberg state interatomic potential

Spectrochim Acta A Mol Biomol Spectrosc. 2018 May 5:196:58-66. doi: 10.1016/j.saa.2018.01.075. Epub 2018 Jan 31.

Authors

T Urbańczyk¹, M Krośnicki², A Kędziorski³, J Koperski⁴

Affiliations

¹ Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, prof. Stanisława Łojasiewcza 11, 30-348 Kraków, Poland. Electronic address: [email protected].
² Institute of Theoretical Physics and Astrophysics, Faculty of Mathematics, Physics and Informatics, University of Gdansk, Wita Stwosza 57, 80-952 Gdańsk, Poland.
³ Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5/7, 87-100 Toruń, Poland.
⁴ Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, prof. Stanisława Łojasiewcza 11, 30-348 Kraków, Poland.

PMID: 29428897
DOI: 10.1016/j.saa.2018.01.075

Abstract

Revisited study of the E³Σ₁⁺ (6³S₁)←A³Π₀₊(5³P₁) transition in CdAr using both theoretical and experimental approach is presented. Systematic detection of the E³Σ₁⁺_in,υ'←A³Π₀₊,υ″=6 transition frequencies with higher accuracy and spectrally narrower laser extended and improved analysis and simulation of the LIF excitation spectrum. More consistent characterization of the E³Σ₁⁺_in-Rydberg state inner well using inversed perturbation approach methodology was achieved. Free←bound transitions in the E³Σ₁⁺_in←A³Π₀₊,υ″=6 excitation were taken into account in the analysis and simulation of the recorded spectrum. The updated spectroscopic characterization of the A³Π₀₊ state was also revisited.

Keywords: Optical-optical double resonance (OODR) method; Resolved rotational structure; Rydberg electronic state; ab-initio calculations; van der Waals CdAr complex.