Study on Electronic Excited States of Polyatomic Radicals by means of Near-infrared Diode Laser Spectroscopy

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(1) The A(010)^3SIGMA^<(-)> - X^3SIGMA^-(000), A(010)^3SIGMA^<(-)> - X^3SIGMA^-(010) and A(010)^3SIGMA^<(+)> - X^3SIGMA^-(010) bands in the A^3PI_i - X^3SIGMA^- system of the CCO radical have been investigated by means of near-infrared high-resolution diode laser spectroscpy. The spectra have been analyzed to determine detailed molecular constants for both the X^3SIGMA^-(010) and A^3PI_i(010) states including a Renner parameter. Numerous perturbed levels have been found in the A(010)^3SIGMA^<(+)>_0 and A(010)^3SIGMA^<(+)>_1 states.(2) The A^2PI_<3/2>, v=3 <- X^2SIGMA^+, V=0 band of the AlO radical has been sudied by means of near-infrared diode laser spectroscopy in the region from 7470 cm^<-1> to 7490 cm^<-1>. The spectrum has been analyzed to determine newly molecular constants for the A^2PI_<3/2>, v=3 state.