Collisional Coupling of the Molecular Oxygen 16O2 Fine-Structure Lines Under Low Pressures

We consider collisional coupling between the fine-structure lines of molecular oxygen near 60 GHz under pressures of up to 20 Torr. The observation possibility of the coupling effect manifestation in the oxygen line profile is analyzed by means of numerical simulation. The signal-to-noise ratio requ...

Full description

Saved in:
Bibliographic Details
Published in:Radiophysics and quantum electronics 2018-05, Vol.60 (10), p.808-823
Main Authors: Makarov, D. S., Vilkov, I. N., Koshelev, M. A., Aderkina, A. A., Tretyakov, M. Yu
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Astroparticles
Computer simulation
Coupling (molecular)
Hadrons
Heavy Ions
Lasers
Mathematical and Computational Physics
Mathematical models
Molecular chains
Molecular structure
Nuclear Physics
Observations and Techniques
Optical Devices
Optics
Oxygen
Photonics
Physics
Physics and Astronomy
Quantum Optics
Theoretical
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We consider collisional coupling between the fine-structure lines of molecular oxygen near 60 GHz under pressures of up to 20 Torr. The observation possibility of the coupling effect manifestation in the oxygen line profile is analyzed by means of numerical simulation. The signal-to-noise ratio required for direct observation of the collisional coupling and deviations of the line parameters from the tabulated values related to the indirect effect manifestation in the spectra are numerically evaluated. By the example of the overlapping profiles of the 13+ and 3− lines, the impact of collisional coupling on the doublet profile is experimentally demonstrated. The results of the analysis of experimental spectra are in good agreement with the results of numerical simulation.
ISSN:0033-8443
1573-9120
DOI:10.1007/s11141-018-9849-8