Analysis of High Resolution Ar IX Spectrum, Excited in Fast Capillary Discharge

Antsiferov, P. S.; Churilov, S S; Dorokhin, L. A.; Koshelev, K. N.; Nazarenko, A. V.; Sidelnikov, Yu. V.

doi:10.1238/physica.regular.062a00127

Cited by 12 publications

(7 citation statements)

References 24 publications

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“…As a result, all 54 of 3d 9 4l level energies connected by 121 spectral lines have been determined. The measured 3d 9 4l level energies have been semi-empirically described by using the Least-Squares-Fitting (LSF) in the frame of Cowan's code RCE [23]. The LSF and HF energy parameters used in fitting are presented in Table III.…”

Section: Analysis and Discussionmentioning

confidence: 99%

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Analysis of the 4–4 Transitions in the Ni-like Kr IX Spectrum

2005

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The spectrum of nickel-like Kr IX excited in a fast capillary discharge and photographed with high resolution in the 300-800 Å wavelength region has been investigated. The analysis has been carried out on a basis of the energy parameter interpolation in the Ni I isoelectronic sequence. 115 spectral lines belonging to the 3d 9 4s-3d 9 4p-3d 9 4d-3d 9 4f transitions have been classified for the first time and the complete energy structures of 3d 9 4s, 3d 9 4p, 3d 9 4d and 3d 9 4f configurations have been measured in the Kr IX spectrum. The experimental results have been confirmed by the Generalized Least Squares (GLS) Fitting technique using the spectroscopic data obtained for the Ni-like ions from Ga IV through Cd XXI. GLS predictions for 3d 9 4d and 3d 9 4f energy levels in the Zr XIII -Pd XIX sequence are tabulated. 3d 9 4p -3d 9 4d 1 P 1 -1 S 0

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Section: Analysis and Discussionmentioning

confidence: 99%

“…The spectra of Kr IX were excited in a fast 40 kV capillary discharge with inductive storage and plasma-erosion switch opening. The operation principle and the construction of this source have been described in details in [23]. We used an alumina capillary 4 mm in an internal diameter and 40 mm in length.…”

Section: Experimental Set-upmentioning

confidence: 99%

Analysis of the 4–4 Transitions in the Ni-like Kr IX Spectrum

2005

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“…Further recent (longer-wavelength) EUV data on Ar IX have been reported by Antsiferov et al from a capillary discharge [96]. Ne-like ions have been studied widely because of their applicability to EUV laser schemes.…”

Section: Ne-like Ar IXmentioning

confidence: 90%

Spectroscopy of Argon Excited in an Electron Beam Ion Trap

Träbert

2005

Phys. Scr.

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Argon is one of the gases best investigated and most widely used in plasma discharge devices for a multitude of applications that range from wavelength reference standards to controlled fusion experiments. Reviewing atomic physics and spectroscopic problems in various ionization stages of Ar, the past use and future options of employing an electron beam ion trap (EBIT) for better and more complete Ar data in the x-ray, EUV and visible spectral ranges are discussed.

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“…Identification of the VUV spectrum was compiled by using previously reported experimental spectra and wavelength tables [16][17][18][19][20][21][22][23][24]. The VUV spectra were obtained by scanning the wavelength of the spectrometer shot by shot.…”

Section: Line Identification Of C Ne and Armentioning

confidence: 99%

High-Resolution VUV Spectra of Carbon, Neon and Argon in a Wavelength Range of 250 to 2300 Å for Plasma Diagnostics Observed with a 3 m Normal Incidence Spectrometer in LHD

Katai

Morita

Goto

2007

Plasma and Fusion Research

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Intrinsic impurities have been much reduced in toroidal fusion devices through the development of several wall-conditioning techniques as well as by the use of carbon materials in the first wall and divertor plates. Impurity elements useful for passive plasma spectroscopy have been then extremely limited. At present, only carbon is a subject for spectroscopic diagnostics in most discharges except for fuel atoms. The use of rare gas as a brighter light source is a method to overcome the present difficulty in passive spectroscopy. Recently, rare gases have also been used for edge cooling to reduce the divertor heat flux. Therefore, high-resolution spectra (∆λ ∼ 0.2 Å) from neon and argon in a 250 to 2300 Å wavelength range have been measured using a 3 m normal incidence spectrometer in Large Helical Device (LHD) and the measured spectra were precisely analyzed. The VUV spectra of carbon, neon and argon are presented for spectroscopic use and their wavelengths are tabulated with their relative intensities. The spectral profiles of almost all the spectral lines measured here are formed by the Doppler broadening and self-absorption processes. The Doppler broadening of neon and argon spectra are plotted against the ionization energies and Doppler spectra from carbon lines are presented. The self-absorption spectra of the hydrogen Lyman-α line, which are found in the LHD high-density discharge, are also presented and the neutral density is analytically estimated.

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Analysis of High Resolution Ar IX Spectrum, Excited in Fast Capillary Discharge

Cited by 12 publications

References 24 publications

Analysis of the 4–4 Transitions in the Ni-like Kr IX Spectrum

Analysis of the 4–4 Transitions in the Ni-like Kr IX Spectrum

Spectroscopy of Argon Excited in an Electron Beam Ion Trap

High-Resolution VUV Spectra of Carbon, Neon and Argon in a Wavelength Range of 250 to 2300 Å for Plasma Diagnostics Observed with a 3 m Normal Incidence Spectrometer in LHD

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