Abstract The He-broadened half-widths of 65 lines of Phosphine in the range of 2200–2400 cm−1 have been measured at 293 K by means of a Fourier Transform spectrometer at 0. 006 cm−1 resolution. For several experimental conditions related to PH3 and He pressures we used 2 and 5 mm path-length. The broadening coefficients derived using a non-linear fitting technique are reported.
