Shift of the centers of H2O absorption lines in the region of 1.06 μm

The shift coefficients for the lines of the nu(1) + nu(2) + nu(3) and nu(2) + 2 nu(3) bands of H(2)O in the region from 9403 to 9413 cm(-1) are measured and calculated. The measurements are performed using an intracavity laser spectrometer based on a neodymium laser with a determination error of the line center of 0.003-0.004 cm(-1). The Ar, Kr, and Xe noble gases, as well as nitrogen, oxygen, and hydrogen were used as buffer gases. The coefficients of shifts in eight H(2)O absorption lines induced by oxygen, nitrogen, and atmospheric air pressures fall into the region from -0.004 to -0.069 cm(-1)/bar. The calculations are performed by a semiempirical method using variational wave functions, which, in contrast to other studies, correctly takes into account intramolecular interactions. The calculated values agree satisfactorily with experimental data.