X-ray observations of 2<i>l</i>-<i>nl</i>' transitions and configuration-interaction effects from Kr, Mo, Nb and Zr in near neon-like charge states from tokamak plasmas

Rice, J. E.; Fournier, K. B.; Goetz, J. A.; Marmar, E.; Terry, J. L.

doi:10.1088/0953-4075/33/23/315

Cited by 47 publications

(43 citation statements)

References 46 publications

(104 reference statements)

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“…Index number corresponds to that in Table 4. (a) Data in CHIANTI are from the work of Zhang et al (1987) and Hibbert et al (1993 Rice et al (2000) and Zhang et al (1987), see Table 13. The ratio between the present AS g f in length and velocity gauges is within 20% of unity for 72% of all-type transitions.…”

Section: Notesmentioning

confidence: 99%

R-matrix electron-impact excitation data for the Ne-like iso-electronic sequence

Liang

Badnell²

2010

A&A

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We present results for the electron-impact excitation of all Ne-like ions from Na + to Kr 26+ obtained using the intermediate-coupling frame transformation R-matrix approach. For each ion's calculation, the close-coupling expansion is taken to be the 113 LS terms (209 levels) belonging to the configurations [1s 2 ]2s 2 2p 6 , 2s 2 2p 5 {3, 4, 5}l, 2s2p 6 {3, 4, 5}l (l ∈ s, p, d, f, and g), and 2s 2 2p 5 {6, 7}l (l ∈ s, p, and d). An additional configuration interaction effect arising from configurations of 2s 2 2p 4 3l{3, 4, 5}l (l ∈ s, p, d, f and g) was included in the target expansion. A detailed comparison of the target structure has been made for six specific ions (Si 4+ , Ar 8+ , Ca 10+ , Fe 16+ , Ni 18+ , and Kr 26+ ) spanning the sequence to assess the accuracy for the entire sequence. Effective collision strengths (Υs) are presented at temperatures ranging from 2×10 2 (q+1) 2 K to 2×10 6 (q+1) 2 K (where q is the residual charge of ions, i.e. Z −10). Detailed comparisons for the Υs are made with the results of previous calculations for several ions, which span the sequence. Furthermore, we examine the iso-electronic trends of effective collision strengths as a function of temperature. The present results are the only R-matrix ones for the majority of the ions and the most extensive and complete data for modelling to-date.

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Section: Notesmentioning

confidence: 99%

R-matrix electron-impact excitation data for the Ne-like iso-electronic sequence

Liang

Badnell²

2010

A&A

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“…Experimental determinations of some levels of Olike Kr reported by Wyart and the TFR Group [1], Dietrich et al [8], Denne et al [9], and Rice et al [10] were compiled by Saloman [11] incorporated in the Atomic Spectra Database (ASD) of the National Institute of Standards and Technology (NIST) [12]. Using an electron-beam ion trap, Kink et al [13] reported a few spectral lines for the (1s 2 )2s 2 2p 3 3l − 2s 2 2p 4 transitions of Kr XXIX with a microcalorimeter detector.…”

Section: Introductionmentioning

confidence: 99%

“…Using various methods, some studies of energy and transition data limited to the 2s 2 2p 4 , 2s2p 5 , and 2p 6 configurations were carried out [15][16][17][18][19]. It is clear that atomic data involving the n = 3, 4 levels are also important because of their wide applications in fusion science [10,13]. To our knowledge, the only published work for these levels were the calculations performed by Rice et al [10] and Aggarwal et al [20].…”

Section: Introductionmentioning

confidence: 99%

“…It is clear that atomic data involving the n = 3, 4 levels are also important because of their wide applications in fusion science [10,13]. To our knowledge, the only published work for these levels were the calculations performed by Rice et al [10] and Aggarwal et al [20]. Rice et al [10] gave some calculated data for the n ≥ 3 levels in O-like Kr.…”

Section: Introductionmentioning

confidence: 99%

“…To our knowledge, the only published work for these levels were the calculations performed by Rice et al [10] and Aggarwal et al [20]. Rice et al [10] gave some calculated data for the n ≥ 3 levels in O-like Kr. Aggarwal et al [20] reported energies and oscillator strengths for the transitions among the 272 levels of the n ≤ 3 complexes using both the multiconfiguration DiracFock (MCDF) method implemented in the GRASP1 code [21,22] and the standard relativistic configuration interaction (RCI) method in the FAC package [23].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Extended calculations of energy levels, radiative properties, A, B hyperfine interaction constants, and Landé g -factors for oxygen-like Kr XXIX

Wang

Jönsson

Ekman

et al. 2017

Journal of Quantitative Spectroscopy and Radiative Transfer

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Measurements of L‐shell X‐ray emission lines of neonlike europium on an electron beam ion trap

et al. 2019

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We report a measurement of the two x-ray transitions that proceed from the (1s 2 2s 2 2p 5 1/2 3d 3/2 ) J=1 and (1s 2 2s 1/2 2p 6 3p 1/2 ) J=1 upper levels to the (1s 2 2s 2 2p 6 ) J=0 ground level in neonlike Eu 53+ (Z = 63), i.e. near the previously documented avoided crossing of the two upper levels at Z = 68. The measurement was carried out using the calorimeter spectrometer on the Livermore EBIT-I electron beam ion trap. It affirms the trends set by the neighboring neonlike ions both in terms of the relative intensity of the two lines and in terms of the magnitude of disagreement with theoretical energy level predictions.

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X-ray observations of 2l-nl' transitions and configuration-interaction effects from Kr, Mo, Nb and Zr in near neon-like charge states from tokamak plasmas

Cited by 47 publications

References 46 publications

R-matrix electron-impact excitation data for the Ne-like iso-electronic sequence

R-matrix electron-impact excitation data for the Ne-like iso-electronic sequence

Extended calculations of energy levels, radiative properties, A, B hyperfine interaction constants, and Landé g -factors for oxygen-like Kr XXIX

Measurements of L‐shell X‐ray emission lines of neonlike europium on an electron beam ion trap

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