High resolution study of the (0, 0) and (1, 1) bands of the A0 u+- X0 g+ system of Au 2

Abstract

The spectra of the (0, 0) and (1, 1) bands of the A0 u +- X0 g + system of digold have been recorded at sub-Doppler resoltuion in a supersonic molecular beam apparatus employing laser vaporization. The rotational structures have been fully resolved from the origin and up, making the J-numbering unequivocal. The analysis confirms the results of a previous rotational analysis of Doppler-limited high temperature spectra of the (3, 0) and (2, 0) bands. The combination of data from both studies leads to improved molecular constants.