Analysis of a perpendicular band in Ar-H2O with origin close to the nu(1) + nu(3), R(0) line in H2O

作者：Vanfleteren T; Foeldes T; Herman M^*

来源：Chemical Physics Letters, 2015, 627: 36-38.

DOI：10.1016/j.cplett.2015.03.032

We have used continuous-wave cavity ring-down spectroscopy to record a band with origin close to 7275.1 cm(-1) in an Ar supersonic expansion seeded with H2O. It is assigned to nu(1) + nu(3) <- GS, Pi(1(01)) <- Sigma(0(00)) in Ar-H2O. The rotational structure (T-rot =12 K) is analyzed and the lines fitted (sigma = 0.0008 cm(-1)) together with literature microwave data. The fit includes strongly perturbed Q lines, from interaction with a Pi state with origin determined to be close to 7274.5 cm(-1). The mean upper state predissociation lifetime is determined to be 3 ns for all reported e and f upper levels.

• 出版日期2015-5-1