Rotational coherent anti-Stokes Raman spectroscopy (CARS) in nitrogen at high pressures (0.1-44 MPa): experimental and modelling results

Bood, Joakim; Bengtsson, Per Erik; Dreier, Thomas

doi:10.1002/1097-4555(200008/09)31:8/9<703::aid-jrs576>3.0.co;2-2

Cited by 19 publications

(2 citation statements)

References 42 publications

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“…Because rotational Raman spectral lines are separated by as much as 8 cm −1 for nitrogen, it is generally accepted that line mixing can be neglected [22]. Haller and Varghese [11] have confirmed this assertion with measurements up to 70 atm.…”

Section: Collisional Line Broadening and Linewidth Modelsmentioning

confidence: 86%

Revisiting N2-N2 collisional linewidth models for S-branch rotational Raman scattering

Linne

Mecker

Kliewer

et al. 2022

Combustion and Flame

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Section: Collisional Line Broadening and Linewidth Modelsmentioning

confidence: 86%

Revisiting N2-N2 collisional linewidth models for S-branch rotational Raman scattering

Linne

Mecker

Kliewer

et al. 2022

Combustion and Flame

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“…In RCARS the line spacing is much bigger, resulting in more highly resolved spectra, even at higher pressures. Studies of RCARS on both N 2 and O 2 at various temperatures and pressures up to 150 atm have been reported [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Optimising hybrid rotational femtosecond/picosecond coherent anti-Stokes Raman spectroscopy (HR-CARS) in nitrogen at high pressures and temperatures

Mecker,

Courtney,

Patterson

et al. 2020

Preprint

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We demonstrate the use of hybrid rotational femtosecond/picosecond (fs/ps) coherent anti-Stokes Raman spectroscopy (HR-CARS) as a technique for temperature measurements in nitrogen gas at high pressures and temperatures. A broadband pulse shaper-adjusted 42 fs pulse interacts with a narrow-bandwidth, frequency-upconverted 5.5 ps pulse in a cell containing N 2 at pressures of 1-70 atm and temperatures of 300-1000 K. A computational code is used to model spectra and fit experimental results to obtain bestfit temperatures. We demonstrate good qualitative fits as well as good accuracy and precision between thermocouple measured and best-fit temperatures over the explored pressure and temperature regimes. The overall average percentage temperature difference between thermocouple measurements and best-fit temperatures is -0.3% with a standard deviation of 7.1%, showing the suitability of HR-CARS for characterising high pressure and temperature environments.

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High‐resolutionRaman Spectroscopy of Gases

Weber

2011

Handbook of High‐resolution Spectroscopy

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A review of high‐resolution Raman spectroscopy of gases, including spontaneous, incoherent Raman spectroscopy, as well as of nonlinear techniques for coherent anti‐Stokes scattering (CARS), stimulated Raman gain (SRG) and stimulated Raman loss (SRL) spectroscopy, and photoacoustic Raman spectroscopy (PARS) in the frequency domain is presented. Femtosecond degenerate four‐wave mixing spectroscopy (Fs‐DFWM) and Raman‐induced polarization spectroscopy (RIPS) in the time domain are discussed. Also treated are the broadenings of Raman lines due to the Doppler and pressure effects. Basic theoretical notions and working equations for the analysis of highly resolved spectra are presented. Examples are drawn from the literature to illustrate the respective advantages and disadvantages of the various techniques. The interplay between high‐resolution Raman spectroscopy, infrared spectroscopy, and ab initio computational schemes is illustrated. The article concludes with an overall assessment of the respective advantages and disadvantages of the methods used in high‐resolution Raman spectroscopy.

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Rotational coherent anti-Stokes Raman spectroscopy (CARS) in nitrogen at high pressures (0.1-44 MPa): experimental and modelling results

Cited by 19 publications

References 42 publications

Revisiting N2-N2 collisional linewidth models for S-branch rotational Raman scattering

Revisiting N2-N2 collisional linewidth models for S-branch rotational Raman scattering

Optimising hybrid rotational femtosecond/picosecond coherent anti-Stokes Raman spectroscopy (HR-CARS) in nitrogen at high pressures and temperatures

High‐resolutionRaman Spectroscopy of Gases

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