Absolute line strengths of 74GeH4 near 5 μm

Abstract

Line positions and absolute line strengths were measured for 23 Q -branch lines of the ν 3 fundamental of 74 GeH 4 at 295 K, using an infrared tunable diode laser spectrometer. The spectral range covered was from 2109.9658 to 2110.6218 cm −1 . The average standard deviation of the measured line positions was 0.0006 cm −1 and that of the line strengths was 3.4%. Vibrational transition dipoles were computed from the measured line strengths, which gave 1226 ± 172 cm −2 amagat −1 for the ν 3 integrated band intensity.