Experimental and theoretical investigation of excited g-symmetry states of Cu2.

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Title: Experimental and theoretical investigation of excited g-symmetry states of Cu2.
Authors: Zhang, Q.1 (AUTHOR), Bornhauser, P.1 (AUTHOR), Knopp, G.1 (AUTHOR), Radi, P.P.1 (AUTHOR), Harmant, G.2 (AUTHOR), Marquardt, R.2 (AUTHOR) roberto.marquardt@unistra.fr
Source: Chemical Physics Letters. Sep2022, Vol. 803, pN.PAG-N.PAG. 1p.
Subjects: Excited states, Four-wave mixing, Ab-initio calculations, Isotopologues
Abstract: [Display omitted] • A new set of rovibronic terms for 63 Cu 2 and 63 Cu 65 Cu. • Application of two-color four-wave mixing spectroscopy at resolution ∼0.04 cm−1. • Tentative assignment of a new excited electronic state of gerade symmetry. • State-of-the-art ab initio calculations at the MRCI level of theory. A new set of rovibronic terms in the range between ∼ 37 000 and 39 000 cm - 1 is reported for the copper dimer isotopologues 63 Cu 2 and 63 Cu 65 Cu. These terms were measured by two-color four-wave mixing spectroscopy yielding rotationally resolved vibronic bands at a resolution ∼ 0.04 cm - 1 . The complex spectral structure is analyzed and a tentative assignment of a new electronic state of gerade symmetry named { 36.9 } 0 g + is proposed. The assignment is corroborated by ab initio calculations carried out at the multi-reference configuration interaction level of theory. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:[Display omitted] • A new set of rovibronic terms for 63 Cu 2 and 63 Cu 65 Cu. • Application of two-color four-wave mixing spectroscopy at resolution ∼0.04 cm−1. • Tentative assignment of a new excited electronic state of gerade symmetry. • State-of-the-art ab initio calculations at the MRCI level of theory. A new set of rovibronic terms in the range between ∼ 37 000 and 39 000 cm - 1 is reported for the copper dimer isotopologues 63 Cu 2 and 63 Cu 65 Cu. These terms were measured by two-color four-wave mixing spectroscopy yielding rotationally resolved vibronic bands at a resolution ∼ 0.04 cm - 1 . The complex spectral structure is analyzed and a tentative assignment of a new electronic state of gerade symmetry named { 36.9 } 0 g + is proposed. The assignment is corroborated by ab initio calculations carried out at the multi-reference configuration interaction level of theory. [ABSTRACT FROM AUTHOR]
ISSN:00092614
DOI:10.1016/j.cplett.2022.139822