Collision broadening of C₂H₄O lines. II. broadened by quadrupolar molecules N₂ and H₂

Abstract

A double modulation microwave spectrograph has been used to measure the linewidth parameters (Δν/p) of four rotational lines of C₂H₄O broadened by quadrupolar molecules N₂ and H₂. Linewidth parameters have been calculated theoretically using the Anderson‐Tsao‐Curnutte theory as well as the Murphy‐Boggs formulation taking the dipole‐quadrupole interaction into consideration. By fitting the calculated (Δν/p) to the measured (Δν/p), molecular quadrupole moments Θ of N₂ and H₂ have been obtained. Inadequacies in the theory have been pointed out.