EXPERIMENTAL-OBSERVATION OF THE INTERCOLLISIONAL INTERFERENCE EFFECT ON THE S1 PURE ROTATION LINE OF THE COLLISION-INDUCED SPECTRA OF THE H-2-HE MIXTURE

The absorption coefficients of the collision induced spectrum of the interaction H//2-He at 300 K between 300 and 700 cm** minus **1 are presented. A lack of absorption (dip) due to the intercollisional interference effect is clearly seen at the frequency of the pure rotation line S//1 of the free molecule of H//2.