High Sensitivity Crds of the a1Δg←X3Σ-g Band of Oxygen Near 1.27 μm: Magnetic Dipole and Electric Quadrupole Transitions in Spectra of Five Isotopologues

Computer Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Atmospheric Species

Scientific paper

The knowledge of accurate spectroscopic parameters for the a1Δg←X3Σ-g band of molecular oxygen near 1.27 μm is very important in the field of remote sensing. Although this band was studied by spectroscopists for over a century a lot of discrepancies still remain in the previously reported line positions and intensities. In this work the Continuous Wave-Cavity Ring Down Spectroscopy (CW-CRDS) technique has been used to record with high sensitivity the absorption spectrum of this band. The spectra were obtained between 7640 and 7917 cm-1 with ``natural'' oxygen and with a sample highly enriched in 18O. The absolute intensities of 377 and 652 oxygen transitions were measured in the two spectra, respectively. They include the a1Δg←X3Σ-g (0-0) bands of 16O2, 16O18O, 16O17O, 17O18O and 18O2. The (0-0) bands of 16O2 and 18O2 show (previously undetected) electric quadrupole transitions with line intensities ranging from 1×10-30 to 1.9×10-28 cm/molecule. They are accompanied by the a1Δg←X3Σ-g (1-1) hot bands which are also reported for the first time. Accurate spectroscopic parameters for the observed bands were derived from a global fit of the experimental line positions, combined with microwave and Raman measurements available in the literature.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

High Sensitivity Crds of the a1Δg←X3Σ-g Band of Oxygen Near 1.27 μm: Magnetic Dipole and Electric Quadrupole Transitions in Spectra of Five Isotopologues does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High Sensitivity Crds of the a1Δg←X3Σ-g Band of Oxygen Near 1.27 μm: Magnetic Dipole and Electric Quadrupole Transitions in Spectra of Five Isotopologues, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High Sensitivity Crds of the a1Δg←X3Σ-g Band of Oxygen Near 1.27 μm: Magnetic Dipole and Electric Quadrupole Transitions in Spectra of Five Isotopologues will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1593124

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.