High-resolution Fourier spectrometry of 14N2 and 15N2 infrared emission spectrum: Extensive analysis of the W3Δu - B3Πg system

Cerny, D.; Roux, F.; Effantin, C.; d’Incan, J.; Vergès, J.

doi:10.1016/0022-2852(80)90339-2

Cited by 42 publications

(50 citation statements)

References 6 publications

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“…X ul groups together known constants and functions like electronic transition moment, Franck-Condon [29,30], and Höln-London factors, electronic partition function, lambda-doubling factor and the statistical weight of the upper level. N n v is the population of the upper vibrational level, A v and B v are the spin-orbit and rotational constants, and Q r is the rotational partition function (Q r ≈ (kT r /hcB v )).…”

Section: Data Processingmentioning

confidence: 99%

Temperature Measurement of an Atmospheric Impulse Arc Using Ruby Laser Scattering

Uchino

Muraoka

Akazaki

1982

Jpn. J. Appl. Phys.

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Time-resolved Fourier transform spectroscopy, with temporal and spectral resolutions respectively at best 1.6 µs and 0.014 cm −1 (Doppler-limited), is applied as a new diagnostic tool to the characterization of nitrogen plasma. A spectral range extending from 0.93 to 1.85 µm is recorded at once. The rotational lines of the B 3 g → A 3 + u , v = 0, −1, −2, −3 vibronic sequences are fully resolved. Thermodynamical plasma parameters are obtained from line intensity and width analysis. The relaxation of the B 3 g state of N 2 in a pulsed electrical discharge is observed under various pressures and pulse repetition rates. Evolutions of the low-lying vibrational levels B 3 g , v = 0, 1, 2 during the early afterglow (post-discharge time period 150 µs) are analysed. A simplified kinetic model based on the strong couplings between B 3 g and A 3 + u states and between B 3 g and W 3 u states is adopted. It is found appropriate for the interpretation of the spectra within a restricted range (pressure 16-53 Pa (0.12-0.40 Torr), repetition rate 50-200 Hz) of the experimental conditions. Collisional rate constants coupling the B v = 0 level to the levels A v = 7 and W v = 0 are estimated to be k BW = 9 × 10 −12 cm 3 s −1 and k BA = 3 × 10 −12 cm 3 s −1 , in accordance with existing results.

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Section: Data Processingmentioning

confidence: 99%

Temperature Measurement of an Atmospheric Impulse Arc Using Ruby Laser Scattering

Uchino

Muraoka

Akazaki

1982

Jpn. J. Appl. Phys.

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“…significantly higher precision than the earlier work from Roux et al [14,18,19,32], the coverage in v is smaller, reflecting different discharge conditions. Overall most of the transitions in the spectra are modelled, with some atomic lines from Cr (the cathode) and N are also present (the latter easily recognizable from their hyperfine-broadened profiles), and some transitions from the A -X transition in N 2 + .…”

Section: (B)mentioning

confidence: 60%

The spectrum of N2 from 4,500 to 15,700 cm−1 revisited with pgopher

Western

Carter-Blatchford

Crozet

et al. 2018

Journal of Quantitative Spectroscopy and Radiative Transfer

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Using a reference molecular atlas to ensure self-consistency of wavelength calibration is widespread practice. Boesch & Reiners (Astronomy & Astrophysics 582 A43 (2015)) reported a line list from a discharge of molecular nitrogen from 4500 to 11000 cm −1 for this purpose. With a hollow-cathode discharge source, we have extended the experimental spectrum up to 15700 cm −1 , to include the range of Ti:sapphire lasers, since the density of N 2 lines is greater than atomic atlases in common use. Recognizing that experimental conditions can vary, we have also analysed the spectra (comprising several B ³Π g -A ³Σ u + , B' ³Σ u − -B ³Π g , and W ³Δ u -B ³Π g N 2 bands) with standard Hamiltonians, so that any part of the discharge spectrum 4500 -15700 cm −1 can be simulated. Parameters are given to do this with the spectral simulation and analysis package PGOPHER. (C. Western, J. Quant. Spectrosc.Rad. Transf., 186, 221 (2016)). The analysis also included high-level ab initio calculations of potential energy curves, transition moments and spin-orbit coupling constants and these were used in preparing the model, extending the potential range of applicability. The results are available in a variety of formats to suit possible applications, including the experimental spectrum in ASCII, a detailed line list with positions and Einstein A coefficients, and a PGOPHER input file to synthesize the spectrum at selectable temperature and resolution.

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“…For the B-W system (1.7-8.1 m), observations of the ⌬v Ͼ 1 sequences and spectroscopic analysis at high resolution were reported by Effantin et al (12), Cerny et al (13), and Roux et al (7,11). As for the ⌬v ϭ 1 sequences, 84 stimulated emission lines (5.5-8.1 m) of four different groups were observed by McFarlane (14).…”

Section: Introductionmentioning

confidence: 72%

High-Resolution Fourier Transform Spectroscopy of 14N2: Analysis of the (1–0), (2–1) Bands of the B3Πg–W3Δu System

Faye¹,

Kou²,

Farrenq³

et al. 1999

Journal of Molecular Spectroscopy

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High-resolution Fourier spectrometry of 14N2 and 15N2 infrared emission spectrum: Extensive analysis of the W3Δu - B3Πg system

Cited by 42 publications

References 6 publications

Temperature Measurement of an Atmospheric Impulse Arc Using Ruby Laser Scattering

Temperature Measurement of an Atmospheric Impulse Arc Using Ruby Laser Scattering

The spectrum of N2 from 4,500 to 15,700 cm−1 revisited with pgopher

High-Resolution Fourier Transform Spectroscopy of 14N2: Analysis of the (1–0), (2–1) Bands of the B3Πg–W3Δu System

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