Atomic data and spectral line intensities for Ar XIII

Liang, G. Y.; Dong, Guoxuan; Zeng, Jiaolong

doi:10.1016/j.adt.2004.07.002

Cited by 6 publications

(12 citation statements)

References 19 publications

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“…In our calculations, we too have included 224 levels of the above stated configurations, and the results obtained are listed in Table 1 along with those of Liang et al (2004) and Nahar (2000). It is satisfying to note that the discrepancies between our present calculations from  and those of Liang et al from  are below 1.7% for all levels, and in fact almost match for a majority of these.…”

Section: Ar XIIIsupporting

confidence: 49%

“…Similarly, the results of Nahar (2000) are restricted to the E1 transitions alone. Although for many transitions the agreement between her results and those of Liang et al (2004) is satisfactory (see Fig. 2 of Liang et al), especially for strong transitions, the accuracy of her results is not very high, as already discussed in Sect.…”

Section: Ar XIIImentioning

confidence: 48%

“…However, the two sets of energy levels (from our 224 and 524 level calculations) agree very closely, and we do not observe any noticeable differences. To conclude, we may state with confidence that the energy levels listed in Table 1 from our  or earlier calculations of Liang et al (2004) from  are accurate to about 1%, whereas those of Nahar (2000) differ by up to 2 Ryd (5%) for some levels. Furthermore, the level orderings from the  and  codes are nearly the same but differ in many instances with those obtained from the R-matrix code.…”

Section: Ar XIIImentioning

confidence: 99%

“…This is mainly because many of the energy levels of the 2s2p 2 4 configurations lie below those of the 2s 2 2p5 configurations (see Table 1) and extend up to an energy of ∼45 Ryd. Similarly, many of the levels of the 2s2p 2 5 configurations lie just above those of the 2s 2 2p5d 1 P 0 1 level (356) -the highest level considered by Liang et al (2004). Therefore, performing a larger calculation than that of Liang et al has become necessary, which will also help in spectral modelling apart from improving upon the accuracy of the results.…”

Section: Ar XIIImentioning

confidence: 99%

“…In a more recent work, Liang et al (2004) have reported energy levels and radiative rates for transitions among the 224 levels of the 2s 2 2p 2 , 2s2p 3 , 2p 4 , 2s 2 2p3 , 2s2p 2 3 , 2s 2 2p4 , and 2s 2 2p5 ( ≤ d) configurations. They have adopted the Flexible Atomic Code () of Gu (2003), which is a fully relativistic code like , and is available at http://kipac-tree.stanford.edu/fac.…”

Section: Ar XIIImentioning

confidence: 99%

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Energy levels and radiative rates for transitions in Ar XIII, Ar XIV and Ar XV

Aggarwal¹,

Keenan²,

Nakazaki

2005

A&A

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Abstract. Energies for 524 levels of Ar XIII, 460 levels of Ar XIV and 156 levels of Ar XV have been calculated using the  code of Dyall et al. (1989). Additionally, radiative rates, oscillator strengths, and line strengths are calculated for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2), and magnetic quadrupole (M2) transitions among these levels. Comparisons are made with the limited results available in the literature, and the accuracy of the data is assessed. Our energy levels are estimated to be accurate to better than 1%, whereas results for other parameters are probably accurate to better than 20%. Additionally, the level lifetimes derived from our radiative rates are in excellent agreement with measured values.

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Section: Ar XIIIsupporting

confidence: 49%

Section: Ar XIIImentioning

confidence: 48%

Section: Ar XIIImentioning

confidence: 99%

Section: Ar XIIImentioning

confidence: 99%

Section: Ar XIIImentioning

confidence: 99%

See 3 more Smart Citations

Energy levels and radiative rates for transitions in Ar XIII, Ar XIV and Ar XV

Aggarwal¹,

Keenan²,

Nakazaki

2005

A&A

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Electron impact collision strengths in Si IX, Si X, and Si XI

Liang

Zhao

Zeng

2007

Atomic Data and Nuclear Data Tables

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Electron impact collision strengths among 560 levels of Si IX, 320 levels of Si X, and 350 levels of Si XI have been calculated using the Flexible Atomic Code of Gu [M.F. Gu, Astrophys. J. 582 (2003) 1241]. Collision strengths X at 10 scattered electron energies, namely 10, 50, 100, 200, 400, 600, 800, 1000, 1500, and 2000 eV, are reported. Assuming a Maxwellian energy distribution, effective collision strengths Ç are obtained on a finer electron temperature grid of 0.5, 1.0, 2.0, 3.0, 4.0, 5.0, and 6.0 MK, which covers the typical temperature range of astrophysical hot plasmas. Additionally, radiative rates A and weighted oscillator strengths gf are given for the more probable transitions among these levels. Comparisons of our results with available predictions reported in earlier literature are made and the accuracy of the data is assessed. Most transitions exhibit a good agreement, but large differences in gf appear for a few cases, which are due to the different configuration interactions included in different theoretical calculations. For excitations among levels of the ground and lower excited configurations, large discrepancies of Ç may have resulted from the consideration of resonance effects in earlier works.

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Energy Levels and Observed Spectral Lines of Ionized Argon, ArII through ArXVIII

Saloman

2010

Journal of Physical and Chemical Reference Data

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The energy levels and observed spectral lines of ionized argon atoms, in all stages of ionization, have been compiled. Sufficient experimental data were found to generate level and line tables for ArII through ArXV. For ArXVI a mix of experimental and theoretical data were used. Because of the superiority of the theoretical data for ArXVII and ArXVIII, theoretical values are compiled for the energy levels and the lines are calculated from them. Experimental g-factors are included for ArII. A value, either experimental, semiempirical, or theoretical, is included for the ionization energy of each ion.

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Atomic data and spectral line intensities for Ar XIII

Cited by 6 publications

References 19 publications

Energy levels and radiative rates for transitions in Ar XIII, Ar XIV and Ar XV

Energy levels and radiative rates for transitions in Ar XIII, Ar XIV and Ar XV

Electron impact collision strengths in Si IX, Si X, and Si XI

Energy Levels and Observed Spectral Lines of Ionized Argon, ArII through ArXVIII

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