Collision broadening of 0,0 to 1,0 rotational line of CH₃⁸¹Br. II. Broadened by quadrupolar and non polar molecules

This is the authors' abstract. We don't add key points for this paper.

For pt. I see ibid., vol. 5, 997, (1972). Widths of JK 0,0 to 1,0 rotational line of a symmetric top molecule CH 3 81 Br broadened by N 2 , H 2 , CO 2 , O 2 , C 6 H 6 , CS 2 and CCl 4 have been measured on a double modulation microwave spectrograph. The experimental data have been compared with the theoretical values as calculated by Anderson-Tsao-Curnutte theory (1962) and Murphy and Boggs theory (1967-68) taking dipole-quadrupole and dispersion forces for the quadrupolar perturbers and dispersion forces for the spherical top perturber CCl 4 . Molecular quadrupole moments of the quadrupolar perturbers have been determined by Anderson-Tsao-Carnutte theory and compared with other values obtained from different methods. Attempts have also been made to evaluate the molecular quadrupole moment of the absorber CH 3 81 Br by including the quadrupole-quadrupole interaction.