Article

Franck-Condon factors and radiative lifetime of the A2Π(1/2)-X2Σ+ transition of ytterbium monofluoride, YbF.

Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA.
Physical Chemistry Chemical Physics (Impact Factor: 4.2). 08/2011; 13(42):19013-7. DOI: 10.1039/c1cp21585j
Source: PubMed

ABSTRACT The fluorescence spectrum resulting from laser excitation of the A(2)Π(1/2)←X(2)Σ(+) (0,0) band of ytterbium monofluoride, YbF, has been recorded and analyzed to determine the Franck-Condon factors. The measured values are compared with those predicted from Rydberg-Klein-Rees (RKR) potential energy curves. From the fluorescence decay curve the radiative lifetime of the A(2)Π(1/2) state is measured to be 28 ± 2 ns, and the corresponding transition dipole moment is 4.39 ± 0.16 D. The implications for laser cooling YbF are discussed.

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