Knowledge Bank

Absolute strengths and wavenumbers of slightly over 200 vibration rotation lines of $PH3$ gas have been measured at 296K in the spectral regions near 2156, 2161, 2193 and $2208cm-1$ using a tunable diode laser spectrometer. Line strength measurements were reproducible to better than 5% on average and the uncertainty in line positions wash less than $0.002cm-1$. Selected $PH3$ lines have been pressure broadened with $H2$ gas and the results will be discussed.