Spectroscopic characterization of the X2Π1/2, B2Σ1/2, and H2Σ1/2 states of AlKr
摘要:
The AlKr van der Waals complex was characterized by laser-induced fluorescence spectroscopy in a supersonic free jet. Rotationally resolved spectra were recorded for eight bands of the AlKr(B 2Σ+←X 2Π1/2) transition and for seven bands of the AlKr(H 2Σ+←X 2Π1/2) transition. Rydberg–Klein–Rees potential-energy curves were determined for the B 2Σ+ and H 2Σ+ states, using vibrational and rotational spectroscopic constants derived from the spectra. The interaction between the X 2Π1/2 ground state and the low-lying repulsive A 2Σ+ state was characterized by analysis of the Λ doubling in the ground state. Equilibrium bond lengths were obtained for the X, B, and H states, and dissociation energies for the B and H states. The fact that the more strongly bound H 2Σ+ state has a larger re value than the B 2Σ+ state was rationalized by postulating an avoided potential curve crossing between the H 2Σ+ state and a repulsive valence 2Σ+ state correlating with Al(3s23d)+Kr.
Spectroscopic characterization of the <i>X</i> <sup>2</sup>Π<sub>1</sub><sub>/</sub><sub>2</sub>, <i>B</i> <sup>2</sup>Σ<sub>1/2</sub>, and <i>H</i> <sup>2</sup>Σ<sub>1/2</sub> states of AlKr
作者:Zhenwen Fu、Steven Massick、John G. Kaup、Odile Benoist d’Azy、W. H. Breckenridge
DOI:10.1063/1.463156
日期:1992.8
The AlKr van der Waals complex was characterized by laser-induced fluorescence spectroscopy in a supersonic free jet. Rotationally resolved spectra were recorded for eight bands of the AlKr(B 2Σ+←X 2Π1/2) transition and for seven bands of the AlKr(H 2Σ+←X 2Π1/2) transition. Rydberg–Klein–Rees potential-energy curves were determined for the B 2Σ+ and H 2Σ+ states, using vibrational and rotational spectroscopic constants derived from the spectra. The interaction between the X 2Π1/2 ground state and the low-lying repulsive A 2Σ+ state was characterized by analysis of the Λ doubling in the ground state. Equilibrium bond lengths were obtained for the X, B, and H states, and dissociation energies for the B and H states. The fact that the more strongly bound H 2Σ+ state has a larger re value than the B 2Σ+ state was rationalized by postulating an avoided potential curve crossing between the H 2Σ+ state and a repulsive valence 2Σ+ state correlating with Al(3s23d)+Kr.