Contribution des moments octupolaire et hexadecapolaire a l'elargissement des raies spectrales de molecules linearaires

Expressions for linewidths due to hexadecapole-dipole, hexadecapole-quadrupole, hexadecapole-octupole, and hexadecapole-hexadecapole interactions have been determined from the Anderson-Tsao-Curnutte theory. We have shown—for linewidths of CO₂ with self-broadening and broadened by N₂, as well as for linewidths of CO with self-broadening and broadened by N₂, O₂, H₂, and CO₂—that allowance for octupolar and hexadecapolar mements yields improved agreement with experimental data for high |m|-values.