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Hyperfine interaction and Stark effect in the b 3Pi-X 1Sigma+(0,0) band of copper monofluoride, CuF
1Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA.
Abstract:
The low-rotational levels of the b (3)Pi-X (1)Sigma(+)(0,0) band of copper monofluoride, CuF, were recorded field free and in the presence of a static electric field. The field-free spectrum was analyzed to produce a refined set of fine and hyperfine parameters for the b (3)Pi(v=0) state. The permanent electric dipole moment, mu, for the b (3)Pi(v=0) and X (1) summation operator(+)(v=0) states were determined to be 2.36(2) and 5.26(2) D, respectively, from the analysis of the observed Stark shifts. The experimental mu values are compared to theoretical predictions. The change in mu upon excitation and the hyperfine parameters are discussed in terms of the proposed electronic configuration for the b (3)Pi and X (1)Sigma(+) states. The optical Stark spectroscopy of the A (2)Pi(3/2)-X (2)Sigma(+)(0,0) subband of YO was also recorded and analyzed to precisely calibrate the electric field strength. The determined mu values are 3.714(5) and 4.542(40) D for the A (2)Pi(3/2)(v=0) and X (2)Sigma(+)(v=0) states, respectively.
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