Temperature dependence of self-induced pressure broadening and shift of the 643-550 water molecule line

Experimental results on the collisional self-shift and self-broadening of the 6 43 - 5$50) rotational water line at 439 GHz are presented in the temperature range 250 - 390 K. The (To/T) exponent for the shift and broadening are: (alpha) equals 2.59(20) and (beta) equals 0.62(9), respectively. A method for the remote measurement of gas temperature, based on spectral collisional shift and broadening, is proposed.