Determination of transition moments from power saturation

The electric (or magnetic) dipole transition moment may be calculated from the power broadening of saturation spectra if the ratio (T₂/T₁) is known or can be assumed as unity. The transition moment of the (43-0) P(13) R(15) lines of I₂ coincident with the 5145 Å Ar⁺ laser line is calculated from literature data on the power broadening of the saturation spectrum and compared to that obtained from absorption intensity measurements.