Low temperature hydrogen broadened linewidths of ammonia in the (0,1,0,0)?(0,0,0,0) band at 200 K.
Fourier transform spectra of the (0,1,0,0)?(0,0,0,0) band of ammonia have been measured for values of the hydrogen broadened linewidth parameters at a temperature of 200 K. The halfwidths for >200 lines have been determined with an average RMS of 5% in the interval between 750 and 1250 cm(-1). No measurements of the widths in the (s)R branch, and only 12 widths in the (s)Q branch, were obtained because of severe lending of the J-K manifolds. The broadening coefficients vary between 0.06 and 0.14 cm(-1)/atm. for (J,K) < (12,12).
Margolis
J S
JS
Poynter
R L
RL