The role of ArIII in quantitative spectroscopy on hot argon plasmas

Kühn, Gerrit; Könemann, F; Kock, M.

doi:10.1016/j.jqsrt.2006.09.015

Cited by 7 publications

(4 citation statements)

References 28 publications

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“…The experimental values of the Biberman factors for doubly ionized gases are in scarcity. 24 In Fig. 1(b) the only experimental data (to the knowledge of the authors) at 468.8 nm (Ref.…”

Section: A Line and Continuum Radiationmentioning

confidence: 99%

Modified Fowler–Milne method for the spectroscopic determination of thermal plasma temperature without the measurement of continuum radiation

Gao

2011

Review of Scientific Instruments

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A technique based on the Fowler-Milne method for the spectroscopic determination of thermal plasma temperatures without measuring continuum radiation is presented. This technique avoids the influence of continuum radiation with the combined line and continuum emission coefficients to derive the plasma temperatures. The amount of continuum emission coefficient is estimated by using an expression related to the Biberman factors. Parameters that affect the accuracy of the proposed technique and errors in the measured plasma temperatures are analyzed. It is shown that, by using the Ar I 696.5 nm line with a bandwidth of 3.27 nm without taking into account the continuum radiation, the plasma temperature measured will be lower on the order of up to 1000-3000 K for temperatures from 20,000 to 24,000 K. The theoretically predicted temperature errors are in good agreement with the experimental results, indicating that the proposed technique is reliable for plasma temperature measurement.

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“…The experimental values of the Biberman factors for doubly ionized gases are in scarcity. 24 In Fig. 1(b) the only experimental data (to the knowledge of the authors) at 468.8 nm (Ref.…”

Section: A Line and Continuum Radiationmentioning

confidence: 99%

Modified Fowler–Milne method for the spectroscopic determination of thermal plasma temperature without the measurement of continuum radiation

Gao

2011

Review of Scientific Instruments

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“…Lines of Ar were identified in the central stars of planetary nebulae and white dwarfs (Werner et al 2007) and the solar corona (Del Zanna & Woods 2013;Del Zanna & DeLuca 2018). Furthermore, the emission spectra from the argon ions were studied in laboratory plasma (Draganić et al 2003;Kühn et al 2007;Burger et al 2012;Carpenter et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Electron-impact ionization of Ar²⁺

Kynienė

Jonauskas

2021

A&A

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We study electron-impact single-ionization cross-sections for all levels of the ground configuration of the Ar 2+ ion using the distorted wave approximation. We investigate the influences of the direct ionization and excitation-autoionization processes on the total singleionization cross sections. We used corrected energies for the levels of the Ar 3+ ion so that the ionization threshold corresponds to the value recommended by National Institute of Standards and Technology (NIST). Radiative damping is taken into account for the ionization cross-sections of the indirect process. Excitations from the 3s and 3p subshells are investigated for the indirect process. We demonstrate that the excitations from the outermost 3p subshell of the ground configuration provide an important contribution to the single ionization cross-sections at low energies. Fairly good agreement with measurements is obtained for the ground level of the Ar 2+ ion. We show that the direct ionization provides ∼70% at peak of the total single-ionization cross-sections.

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“…In astrophysics [1][2][3], argon spectral lines are important in determining the chemical abundance of elements and estimating radiative transfer through stellar plasmas. Argon plasma sources are also applied in various fields of industry and research [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Extended Analysis of Ar III and Ar IV

Raineri

Castellanos

Gallardo

et al. 2018

Atoms

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A pulsed discharge light source was used to study the two and three times ionized argon (Ar II, Ar III) spectra in the 480–6218 Å region. A set of 129 transitions of Ar III and 112 transitions of Ar IV were classified for the first time. We extended the analysis of Ar III to five new energy levels belonging to 3s23p34d, 3s23p35s odd configurations. For Ar IV, 10 new energy levels of the 3s23p23d and 3s23p24p even and odd configurations, respectively, are presented. For the prediction of energy levels, line transitions, and transition probabilities, relativistic Hartree–Fock calculations were used.

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The role of ArIII in quantitative spectroscopy on hot argon plasmas

Cited by 7 publications

References 28 publications

Modified Fowler–Milne method for the spectroscopic determination of thermal plasma temperature without the measurement of continuum radiation

Modified Fowler–Milne method for the spectroscopic determination of thermal plasma temperature without the measurement of continuum radiation

Electron-impact ionization of Ar²⁺

Extended Analysis of Ar III and Ar IV

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The role of ArIII in quantitative spectroscopy on hot argon plasmas

Cited by 7 publications

References 28 publications

Modified Fowler–Milne method for the spectroscopic determination of thermal plasma temperature without the measurement of continuum radiation

Modified Fowler–Milne method for the spectroscopic determination of thermal plasma temperature without the measurement of continuum radiation

Electron-impact ionization of Ar2+

Extended Analysis of Ar III and Ar IV

Contact Info

Product

Resources

About

Electron-impact ionization of Ar²⁺