Argon I lines produced in a hollow cathode source, 332 nm to 5865 nm

Whaling, Ward; Anderson, Wilmer; Carle, M.T.; Brault, J. W.; Zarem, Hal A.

doi:10.6028/jres.10714

Cited by 77 publications

(98 citation statements)

References 11 publications

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“…Such identification does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the product identified is necessarily the best available for the purpose. [6], and (d) Kitt Peak spectrum Ti #7 (8/15/92) [21]. Line number corresponds to the row where the line appears in table 1.…”

Section: Wave Numbersmentioning

confidence: 99%

“…van der Waals) line-shift for lines perturbed simultaneously by van der Waals and resonant interactions. He defines the parameter a = [2γ (3)/N]/[2γ (6)/N], measuring the relative strength of the resonance and van der Waals interactions. The terms 2γ (3)/N and 2γ (6)/N are the theoretical broadening coefficients for the resonance and van der Waals interactions, respectively.…”

Section: Interaction Potentialmentioning

confidence: 99%

“…The spectra of neutral and singly-ionized argon have been extensively studied over many decades [1][2][3][4][5][6]. Naturally occurring argon is composed of 99.600% 40 Ar, 0.337% 36 Ar and 0.063% 38 Ar.…”

Section: Introductionmentioning

confidence: 99%

“…Three comprehensive Ar I line lists exist with similar wavelength precision: Norlén [4], Li and Humphreys [3] and Whaling et al [6]. Norlén's atlas contains both Ar I and Ar II lines whereas [3,6] contain Ar I lines only.…”

Section: Introductionmentioning

confidence: 99%

“…Norlén's atlas contains both Ar I and Ar II lines whereas [3,6] contain Ar I lines only. Whaling has presented an Ar II line list of comparable accuracy in [5].…”

Section: Introductionmentioning

confidence: 99%

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Fourier Transform Spectroscopy

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Field Guide to Spectroscopy

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Wave numbers and pressure-induced shifts of 19 blue argon emission lines belonging to the 3p 5 6p-3p 5 4s and 3p 5 5p-3p 5 4s transition arrays were measured with high accuracy using a UV/visible Fourier transform spectrometer (FTS). The measurements were made using electrodeless lamps containing traces of 198 Hg and argon at pressures of 33 Pa (1/4 Torr), 400 Pa (3 Torr), 933 Pa (7 Torr) and 1333 Pa (10 Torr). Calibration of the FTS wave number scale was obtained using the four most prominent lines of 198 Hg as internal standards. The pressure-induced shifts of the argon emission lines are in reasonable agreement with theoretical predictions. These results are of importance for astronomers and analytical chemists who use argon lines for practical wavelength standards as well as for theoreticians calculating argon-argon interactions and potential energy curves of diatomic argon molecules.

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Section: Wave Numbersmentioning

confidence: 99%

Section: Interaction Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Norlén's atlas contains both Ar I and Ar II lines whereas [3,6] contain Ar I lines only. Whaling has presented an Ar II line list of comparable accuracy in [5].…”

Section: Introductionmentioning

confidence: 99%

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Fourier Transform Spectroscopy

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Field Guide to Spectroscopy

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Reliable estimation of wavenumbers for peaks of benzonitrile and cyclohexane

Itoh

2022

J Raman Spectroscopy

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One of the most important parameters in Raman spectroscopy is the wavenumber (Raman shift), which is calculated from the difference between the excitation and Raman scattering absolute wavenumbers. Because the observed wavenumbers are strongly dependent on the spectrometer and measurement conditions, it is essential to calibrate the system by using a well-characterised material. We therefore reliably estimated the wavenumbers and evaluated their uncertainty for the peaks of benzonitrile and cyclohexane by using a HeNe laser and Raman-scattered light calibrated with Ne/Ar emission lines. We considered the uncertainties originating from the fitting and repeatability of both the Ne/Ar emission lines and the Rayleigh/Raman-scattered lights, as well as the unstabilised HeNe laser, and the pixel and spectral resolutions. We also considered the uncertainty originating from the differences in results among the grades and manufacturers (four for benzonitrile and seven for cyclohexane). The estimated wavenumbers of 12 peaks for benzonitrile and 11 peaks for cyclohexane were comparable with those described in ASTM E1840 with an expanded uncertainty from 1.3 to 1.6 cm À1 (k = 2, coverage factor). It was also confirmed that the wavenumbers at 10 C and 35 C were within the expanded uncertainty; thus, these values should be widely useful for the calibration of Raman systems.

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Atomic Spectroscopy

Martin

Wiese

2006

Springer Handbooks

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Argon I lines produced in a hollow cathode source, 332 nm to 5865 nm

Cited by 77 publications

References 11 publications

Fourier Transform Spectroscopy

Fourier Transform Spectroscopy

Reliable estimation of wavenumbers for peaks of benzonitrile and cyclohexane

Atomic Spectroscopy

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