Quadrupole Moment of OCS from Self-Broadening of Microwave Spectrum

Abstract

Self‐broadening of the microwave absorption line of OCS (J=1→2 transition) has been explained by taking dipole—dipole, dipole—quadrupole, and quadrupole—quadrupole interactions simultaneously. The value of the quadrupole moment of OCS comes out to be 7.1×10^—26 esu. The temperature dependence of the linewidth has also been explained on the basis of these mixed interactions taking this value of the quadrupole moment of OCS.