Absorption spectrum of H 3 + near 1.06 μm

10.1007/s11449-008-2003-z

“…In [3], a relation of intramolecular resonances, such as Coriolis, Fermi, and Darling-Dennison resonances, with the line interference and, consequently, with the nonlinear pressure dependence of the line shift was found. That is, collisions mix to a higher extent the steady VR molecular states, which deviate significantly from the rigid top-harmonic oscillator model and whose vibrational modes are mixed.…”

“…Here, γ D = is the Doppler half-width at the intensity  times lower than the intensity at the line The absorption for a slant path is determined by the equation (12) where k(ν) is the profile of the corresponding line, P(h) is the pressure of the air, which depends on the altitude and the tilt angle of the path [3]. ON THE ATMOSPHERIC TRANSMISSION FOR HORIZONTAL, VERTICAL, AND SLANT ATMOSPHERIC PATHS The calculations have been performed in the spectral range 12412-12415 cm -1 , which includes two lines centered at 12414.2027 and 12413.9720 cm -1 .…”

“…In addition, the results of calculation taking into account only the long-range dipole-quadrupole inter-action for pressures up to 10 atm are presented in [3]. For the system H 2 O-N 2 , this approximation is valid for lines with low values of the angular momentum quantum number, while, for lines with large J , the corrections associated with long-range forces can be significant.…”

“…Finally, in [3], the influence of the interference between water vapor lines on the atmospheric transmission of near-IR radiation for horizontal paths was estimated. It was found that, in the range of 0.8 µ m, this influence can contribute several percent.…”

“…The calculated shift and broadening coefficients and cross-relaxation parameters in mixtures ç 2 O-air, ç 2 é-N 2 , and ç 2 é-é 2 at temperatures of 200-300 K for two lines in the range of 0.8 µ m (the 634 541 transition, the 8 ν 2 band with the center at 12414.2027 cm -1 and the 652 541 transition, the 3 ν 1 + ν 2 band centered at 12413.9720 cm -1 ) are presented in [3]. It should be noted that the water vapor spectra in this range are formed by transitions to highly excited VR states, for which intramolecular resonances are quite significant.…”