The Rotational Spectra and Dipole Moments of AgF and CuF by Microwave Absorption

Abstract

Abstract The rotational transitions J=1→2 and 2→3 were measured for 107 Ag 19 F and 109 Ag 19 F by microwave absorption. These spectra allowed the determination of the Dunham-coefficients Y 01 , Y 11 , Y 21 , and Y 02 and from these the potential coefficients a 0 and a 1 and internuclear distance r e were derived. For 63 Cu 19 F and 65 Cu 19 F the hyperfine structure was observed in the J=0→1 and 1→2 rotational spectra. In addition to the Dunham coefficients the quadrupole coupling constants, e q Q, and spin-rotation coupling constant, c, for the Cu nucleus were obtained. Stark effect mea-surements on both AgF and CuF resulted in the determination of the electric dipole moment for the ground vibrational state.