Estimate of the J′J″ dependence of water vapor line broadening parameters

Self- and air-broadening coefficients of HD16O spectral lines

“…Thus, the data are quite roughly estimated. It was shown in [29], and is shown here, that there is a definite dependence of line broadening on the branch type (P, Q, or R). Its physi cal basis is not clear and, probably, can be a subject of an individual study.…”

“…It is shown that the JJ' dependencies act not only for the main isotopologue H 2 16 O (see [29]), but also for HDO.…”

“…Three calculation techniques have been used: 1) the technique [28] in the case of a known quantum transition identification in normal modes; 2) the JJ' dependence [29] in the case when only J and the level symmetry are known; 3) the semiempirical calculation technique [30] for 50 ≥ J > 15.…”

“…If K a of the upper and (or) lower states is unknown, we used the JJ' dependence, similar to that described in [29]. One may say that the JJ' dependence is the development of the quite popular J dependence, when the contour parameters are averaged for every J over a large data volume, e.g., HITRAN or GEISA.…”

Самоуширение И Уширение Углекислым Газом Линий Молекулы Н-=sub=-2-=/Sub=-S

“…Ранее в работе [12] для водяного пара была установлена зависимость коэффициентов па-раметра контура не только от вращательного числа J, и от того, к какому типу ветви относится переход -P, Q или R. Это было предложено называть J ′ J ′′ -зависимостью.…”