Collisional line widths of autoperturbed N[sub 2]: measurements and quantum calculations

In this work we present new experimental and theoretical values for the line broadening coefficients of the Q‐branch Raman lines of autoperturbed N2. For the experimental determination of the coefficients, high resolution stimulated Raman loss spectra of the Q‐branch of N2 at different pressures were obtained at 77, 194 and 298 K. Simultaneously, we carried out Close‐Coupling calculations at 77, 113, 194 K, and Coupled‐states calculations at 298 K rendering a set of theoretical line broadening coefficients that could be directly compared to those obtained from our measurements and from available data in the literature. We observe a good agreement between theoretical and experimental values.