Speed-dependent effects in Doppler-free saturation spectra

被引：4

作者：

Wojtewicz, S. ^{[1
]}

Cygan, A. ^{[1
]}

Kropidlowska, K. ^{[1
]}

Marangoni, M. ^{[2
]}

Maslowski, P. ^{[1
]}

Lisak, D. ^{[1
]}

Ciurylo, R. ^{[1
]}

机构：

[1] Nicolaus Copernicus Univ Torun, Fac Phys Astron & Informat, Inst Phys, Grudziadzka 5, PL-87100 Torun, Poland

[2] Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

来源：

JOURNAL OF MOLECULAR SPECTROSCOPY | 2018年 / 351卷

基金：

欧盟地平线“2020”;

关键词：

Doppler-free saturation spectroscopy; Speed dependence of collisional broadening and shifting; Lamb dip; INFRARED DOUBLE-RESONANCE; LINE-SHAPES; ATMOSPHERIC APPLICATIONS; VELOCITY DEPENDENCE; MULTISPECTRUM FITS; BROADENED HF; PRESSURE; SPECTROSCOPY; ABSORPTION; GAS;

D O I：

10.1016/j.jms.2018.06.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

We analyze the influence of the speed dependence of collisional broadening and shifting on the shape of Doppler-free saturation spectra. Our discussion is limited to the case of strong inelastic collisions when all velocity-changing collisions are also the state-changing collisions and lead only to the Lorentzian broadening of the line. We are focused on the Doppler-shifted saturation line shapes and their application for the determination of parameters describing the speed dependence in the hypergeometric and quadratic approximations commonly used in the spectroscopic databases. We provide relations between three-dimensional speed-dependent collisional broadening and shifting, used in the analysis of Doppler-broadened spectra, and two-dimensional velocity-averaged collisional broadening and shifting occurring in the Doppler-shifted saturated spectra in the quadratic approximation. (C) 2018 Elsevier Inc. All rights reserved.

引用

页码：21 / 28

页数：8

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