Line-shapes analysis with ultra-high accuracy

22nd International Conference on Spectral Line Shapes

Wcislo, Piotr^1 ; Cygan, Agata^1 ; Lisak, Daniel^1 ; Ciurylo, Roman^1

Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, Torun

87-100, Poland^1

关键词: Boltzmann constants;    Cavity ring down spectroscopies;    Line shape calculations;    Numerical solution;    Precise determinations;    Rovibronic transition;    Spectroscopic determinations;    Ultra-high accuracy;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012022/pdf
DOI  :  10.1088/1742-6596/548/1/012022

来源: IOP

【 摘 要 】

We present analysis of the R7 Q8 O2B-band rovibronic transition measured with ultra-high signal-to-noise ratio by Pound-Drever-Hall-locked frequency-stabilized cavity-ring- down spectroscopy. For line-shape calculations ab intio in spirt approach was used based on numerical solution of the proper transport/relaxation equation. Consequences for spectroscopic determination of the Boltzmann constant as well as precise determination of the line position in the Doppler limited spectroscopy are indicated.