High resolution resonance enhanced two photon ionization spectroscopy of RbCs in a cold molecular beam

High resolution resonance enhanced two photon ionization spectroscopy of RbCs in a cold molecular beam

The first rotationally resolved high resolution excitation spectrum of RbCs is obtained near 520 nm by resonance enhanced two photon ionization study. The excited electronic state is assigned to the 5 1Σ+ state by the spectrum analysis and comparison with ab initio calculations. The spectroscopic co...

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Veröffentlicht in:The Journal of chemical physics 2001-05, Vol.114 (20), p.8926-8931
Hauptverfasser: Yoon, Youngjee, Lee, Yonghoon, Kim, Taeshick, Ahn, Jeung Sun, Jung, Younghee, Kim, Bongsoo, Lee, Sungyul
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container_end_page 8931
container_issue 20
container_start_page 8926
container_title The Journal of chemical physics
container_volume 114
creator Yoon, Youngjee
Lee, Yonghoon
Kim, Taeshick
Ahn, Jeung Sun
Jung, Younghee
Kim, Bongsoo
Lee, Sungyul
description The first rotationally resolved high resolution excitation spectrum of RbCs is obtained near 520 nm by resonance enhanced two photon ionization study. The excited electronic state is assigned to the 5 1Σ+ state by the spectrum analysis and comparison with ab initio calculations. The spectroscopic constants of the 5 1Σ+ state are determined to be Te=18 564.560(76) cm−1, ωe=39.193(25) cm−1, Re=4.951(5) Å. The Rydberg–Klein–Rees potential curve is constructed and compared with theoretical calculations. Avoided crossings between the 5 1Σ+ and 6 1Σ+ states of RbCs are observed.
doi_str_mv 10.1063/1.1361251
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title High resolution resonance enhanced two photon ionization spectroscopy of RbCs in a cold molecular beam
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