Measurement and identification of visible lines from W10+

Lu, Qifeng; Yan, Congquan; Fu, Ning; Yang, Y.; Chen, C.Y.; Xiao, Jun; Wang, Kai; Zou, Yaming

doi:10.1016/j.jqsrt.2021.107533

Cited by 10 publications

(6 citation statements)

References 33 publications

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“…The spectroscopic measurements in the visible region have been performed at the SH-HtscEBIT in Shanghai. The details of the experimental setup are given in the previous papers [29,30,34,35]. Briefly, the SH-HtscEBIT is designed for the spectroscopic research of lowly charged ions.…”

Section: Methodsmentioning

confidence: 99%

“…The electron-beam energies are then respectively corrected to 104.5 eV, 127.1 eV, 149.5 eV, 170.5 eV, and 191.5 eV due to two reasons. One is the difference between the output voltage and the setting of the power supply, the other is the space-charge effect [27,29,40]. The output voltage is corrected by measuring with a multimeter (Fluke 17B).…”

Section: Spectral Measurementsmentioning

confidence: 99%

“…Many studies have focussed on the tungsten ions at high ionization stages [10][11][12][13][14][15][16][17][18][19][20][21]. In the past decade, researches on lowly ionized tungsten ions have gradually increased [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38], including W 11+ [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Re-investigation and line identifications for W¹¹⁺ in the visible range

Fu¹,

Lu²,

Yan³

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

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We present a new investigation of unidentified emission lines in 350–660 nm from W11+ at a compact electron-beam ion trap in Shanghai. To help the line identification, transition energies of the lowest 48 levels are calculated by the large-scale relativistic configuration interaction and multiconfiguration Dirac-Hartree-Fock calculation. The results from the two calculations are in good agreement with each other and the deviation is 0.66% on average. By using the collisional-radiative model implemented in the flexible atomic code, six observed lines for the visible spectrum of W11+ are identified as magnetic-dipole transitions from 4f125s25p3 and 4f135s25p2 configurations.

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Section: Methodsmentioning

confidence: 99%

Section: Spectral Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Re-investigation and line identifications for W¹¹⁺ in the visible range

Fu¹,

Lu²,

Yan³

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

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“…Thus, W 14+ is the highest charge state ion that can be generated in the electron-beam energy of 300 eV. The observed emission lines were assigned through comparison with previous measurements [22][23][24][25][26]. The results in figure 2(a) indicate the successful injection of tungsten atoms into the EBIT and the production of highly charged W ions.…”

Section: Methodsmentioning

confidence: 57%

Injection of metallic elements into an electron-beam ion trap using an electron impact metal vapor source

Kimura,

Kiyama,

Ito

et al. 2023

J. Phys. B: At. Mol. Opt. Phys.

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We demonstrate a versatile method for injecting metallic elements into an electron-beam ion trap using a metal vapor source.This method is based on the evaporation of a metal target by continuous electron-beam impact. We present visible emission spectra of highly charged tungsten ions prepared by the present injection scheme.By comparison with the conventional injection method using a high-vapor-pressure W(CO)$_6$ compound, several advantages of the present method, i.e., suppressing charge exchange reactions in the trap region and quick recovery of the vacuum condition after stopping the injection, are found.The present injection method also facilitates the measurement of emission spectra of highly charged niobium ions, which have never previously been observed using electron-beam ion traps.

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“…[13] As for W 9+ and W 10+ , recently, Priti et al measured and analyzed the visible lines for W 8+ and W 9+ ions, [14] and Lu et al presented the visible lines from W 10+ . [15] But contribution from the metastable states to the total cross sections for W 9+ and W 10+ remain unclear. It should be noted that due to open 4f subshell involved, theoretical calculation is challenging and no level energies available for comparison in W 9+ and W 10+ in the NIST ASD.…”

Section: Introductionmentioning

confidence: 99%

Electron-impact ionization of W⁹⁺ and W¹⁰⁺

Bao¹,

Wei²,

Chen³

et al. 2023

Chinese Phys. B

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Electron-impact single-ionization (EISI) cross sections for Wq+ (q=9,10) ions have been calculated using the level-to-level distorted-wave (LLDW) method with emphasis on the contribution of metastable states to the total ionization cross sections. Contributions from direct-ionization (DI) and excitation-autoionization (EA) processes are taken into account. The calculated cross sections include the contributions from both the ground configuration and the long-lived metastable states with lifetimes exceeding 10-6 s. Calculated cross sections are in good agreement with experimental measurements when the influence of metastable states on the total ionization cross section were well considered.

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Measurement and identification of visible lines from W10+

Cited by 10 publications

References 33 publications

Re-investigation and line identifications for W¹¹⁺ in the visible range

Re-investigation and line identifications for W¹¹⁺ in the visible range

Injection of metallic elements into an electron-beam ion trap using an electron impact metal vapor source

Electron-impact ionization of W⁹⁺ and W¹⁰⁺

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Measurement and identification of visible lines from W10+

Cited by 10 publications

References 33 publications

Re-investigation and line identifications for W11+ in the visible range

Re-investigation and line identifications for W11+ in the visible range

Injection of metallic elements into an electron-beam ion trap using an electron impact metal vapor source

Electron-impact ionization of W9+ and W10+

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Product

Resources

About

Re-investigation and line identifications for W¹¹⁺ in the visible range

Re-investigation and line identifications for W¹¹⁺ in the visible range

Electron-impact ionization of W⁹⁺ and W¹⁰⁺