H_2O lines shifts measurements in 1.06 μ region

摘要

Measurements of the pressure shifts coefficients for H_2O absorption lines have been performed in the 9403 - 9414 cm~(-1) spectral region with H_2, O_2, Ar, Xe, Kr and air as foreign gases. The data on lines shifts coefficients have been obtained from analysis of the H_2O-H_2, H_2O-O_2, H_2O-Ar, H_2O-Xe H_2O-Kr and H_2O-Air absorption spectrum recorded at room temperature using Nd glass intracavity laser spectrometer with spectral resolution of 0.03 cm~(-1) and absorption sensitivity of 10~(-8) cm~9-1). The pressure of H_2O was varied from 10 Torr to 20 Torr and the pressure of the buffer gases - from 0 to 1000 mbar. The values of the line shifts coefficients for 8 lines have been derived from the recorded spectra, they ranged from 0.009 cm~(-1)Vatm to 0.069 cm~(-1)/atm. For each buffer gas a linear relationship of line shifts was measured.