The 530 nm system of KRb observed in a pulsed molecular beam: New electric quadrupole transitions (1 1Δ-X 1Σ+)
作者： Yonghoon Lee , Changhun Yun , Youngjee Yoon , Taeshick Kim , Bongsoo Kim
DOI: 10.1063/1.1407272
关键词: Ionization 、 Diatomic molecule 、 Molecular beam 、 Ab initio quantum chemistry methods 、 Atomic electron transition 、 Atomic physics 、 Resonance 、 Chemistry 、 Quadrupole 、 Molecular electronic transition
摘要: New electronic transitions of KRb are identified near 530 nm by resonance enhanced two photon ionization study in a supersonic molecular beam. The rotational structure shows O, P, Q, R, and S branches. From the high resolution analysis comparison with spectra other alkali diatomic molecules we assign observed bands to 1 1Δ-X 1Σ+ KRb, which allowed electric quadrupole radiation. We obtain constants for upper state 39K85Rb as ωe=64.624 1(35)cm−1, Te=18 991.011 0(14)cm−1, Be′=0.035 703 9(10)cm−1, Re=4.204 55(6) A. Another new transition same wavelength region is assigned 3 3Σ+-X 1Σ+ from ab initio calculations.
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