About this scholarly article
Fourier-transform spectroscopy and global deperturbation treatment of the $A^1\Sigma^+ u$ and $b^3\Pi u$ states of K$ 2$ in the entire bound energy range by Klincare, I.; Lapins, A.; Tamanis, M.; Ferber, R.; Zaitsevskii, A.; Pazyuk, E. A.; Stolyarov, A. V. is a scholarly article available to read on EtoBox.
Rotationally-resolved Fourier-transform spectra of laser-induced fluorescence (LIF) $A^1\Sigma^+_u\sim b^3\Pi_u \rightarrow X^1\Sigma^+_g$ of K$_2$ molecules were recorded and analyzed yielding 4053 term values of spin-orbit (SO) coupled $A \sim b$ complex of $^{39}$K$_2$ isotopologue with ca 0.01 cm$^{-1}$ accuracy. Their compilation with 1739 term values from previously published sources allowed to cover the energy range [9955, 17436] cm$^{-1}$ from the bottom of the lower-lying $b^3\Pi_u$ state up to the vicinity of the atomic asymptote $4s\;^2{\rm S}_{1/2}$ + $4p\;^2{\rm P}_{1/2}$, with rotational quantum number $J\in[0,149]$. The experimental data were processed by a direct 6$\times$6 coupled-channel (CC) deperturbation treatment, which accounted explicitly for both SO and electronic-rotational interactions between six states: $A^1\Sigma^+_u$($0$), $b^3\Pi_u$(0,1,2), $c^3\Sigma_u$(1), and $B^1\Pi_u$(1). The initial parameters of the global deperturbation model have been estimated in the framework of {\it ab initio} electronic structure calculations applying multi-referenced configuration-interaction and coupled-clusters methods. The interatomic potentials analytically defined
- Author
- Klincare, I.; Lapins, A.; Tamanis, M.; Ferber, R.; Zaitsevskii, A.; Pazyuk, E. A.; Stolyarov, A. V.
- Published
- 2023
- Language
- EN