EN
The foreign-gas broadening parameter was measured for CHF_3 molecule interacting with spherical (SF_6, CF_4, CH_4, CCl_4) perturbers and the pressure shift parameter of rotational transition J=1 ← 0 in the CHF_3 molecule was obtained. For the systems of trifluoromethane molecule and four spherical molecules as perturbers the collision cross-sections were determined. Experimental line width parameters are interpreted using Anderson-Tsao-Curnutte as well as Murphy-Boggs theories. Accounting for the dispersive and inductive interactions the cross-section was determined. The theoretical values are in qualitative agreement with the experimental results, but the absolute values of the measured cross-section were larger than these calculated.