OPTICAL STARK SPECTROSCOPY OF THE B$^{1}$$A^{\prime\prime}$-X$^{1}$A$^{\prime }$ of CuOH

Abstract

Copper hydroxide, CuOH, is one of the most thoroughly studied . {\textbf{144}} 286, 1990.} transition metal containing polyatomic molecules with the most recent investigation being the dispersed fluorescence and radiative lifetime study. . {\textbf{449}} 282, 2007.} The pure rotational spectrum was recorded and analyzed by Saito$^{\prime}$s group some time ago.. {\textbf{112}} 641, 2000.} Recently a high level {\textit{ab initio}} calculation predicted ground state permanent electric dipole moments, $\mu_{el}$, ranging in value from 5.52D to 3.98D depending upon methodology used to treat electron correlation. Here we report on the first molecular beam study of the B$^{1}$$A^{\prime\prime}$-X$^{1}$A$^{\prime }$ band. The spectrum was recorded field-free and in the presence of a static electric field of up to 4000 V/cm. The hyperfine splitting is observed and analyzed for the first time. The determined $\mu_{el}$ values are used to evaluate the computational methodologies and are compared with those of other copper containing molecules.