Electron-capture collisions at keV energies of boron and other multiply charged ions with atoms and molecules. II. Atomic hydrogen

Gardner, L. D.; Bayfield, J. E.; Koch, Peter; Sellin, I. A.; Pegg, D. J.; Peterson, R. S.; Mallory, M. L.; Crandall, D. H.

doi:10.1103/physreva.21.1397

Cited by 53 publications

(13 citation statements)

References 31 publications

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“…Thus the present calculation is a genuine AO calculation within the basis set and the model potential chosen. [7]; open up triangle, Phaneuf et al [5]; open down triangle, Phaneuf et al [6]; open squares, Goffe et al [17]; solid squares, Crandall et al [4]; stars, Yousif and Geddes [16]; crosses, Gardner et al [3]; open diamond,Ćirić et al [2].…”

Section: +mentioning

confidence: 99%

“…The dominant electron capture channels considered are (2s3s) 3 S , (2s3p) 3 In performing the close-coupling calculation the total spin is conserved, thus calculations were carried out separately for spin singlet and spin triplet symmetries. In each calculation, the two-electron states on the projectile consist of those listed above, together with a number of pseudostates generated from the basis functions.…”

Section: +mentioning

confidence: 99%

“…Several experimental and theoretical studies have been carried out in the last two decades over a broad range of collision energies for this system. The total electron transfer cross section has been measured byĆirić et al [2] at collision energies of 0.92, 1.39 and 1.85 keV amu −1 , by Gardner et al [3] at 2.0 keV amu −1 , and by Crandall et al [4] at 2.8 keV amu −1 . More extensive measurements have been performed by Phaneuf et al [5] in the 5-112 keV amu −1 region, by Phaneuf et al [6] in the low-energy range of 10-110 eV amu…”

Section: Introductionmentioning

confidence: 99%

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Total and state-selective electron capture cross sections for C³⁺+H collisions

Tseng¹,

Lin²

1999

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

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Abstract. Electron capture cross sections in collisions of C 3+ ions with atomic hydrogen have been studied using the close-coupling two-centre atomic orbital (AO) expansion method by treating the collision system in a quasi-two-electron model. Total electron capture cross sections to the dominant individual singlet and triplet excited states are calculated over the energy range 0.1-50 keV amu −1 . The results are compared with existing experimental data and with theoretical calculations based on the molecular orbital (MO) expansion method. It is found that our AO results are in general agreement with the MO results of Errea et al (1991 J. Phys. B: At. Mol. Opt. Phys. 24 4061) and with experiments but that discrepancies still exist in the details.

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Section: +mentioning

confidence: 99%

Section: +mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Total and state-selective electron capture cross sections for C³⁺+H collisions

Tseng¹,

Lin²

1999

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

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“…Type a Ion Theory Data Shah et al [44] total Li q+ (q = 1-3) G16 Seim et al [45] total Li q+ (q = 2-3), N q+ (q = 2-5), Ne q+ (q = 3-5) G16 Goffe et al [40] total B q+ (q = 1-5), C q+ (q = 1-4) G16 Goffe et al [40] total C q+ (q = 5, 6), N 7+ G16, MCLZ, RCMD McCullough et al [46] total B 2+ , C + , N + , Mg 2+ G16 Crandall et al [47] total B q+ (q = 2-5), C q+ (q = 3, 4), N q+ (q = 3, 4), O q+ (q = 5, 6) G16 Gardner et al [48] total B q+ (q = 2-4), C q+ (q = 2-4), N q+ (q = 2-5), O q+ (q = 2-5) G16 Phaneuf et al [49] total C q+ (q = 1-4), N q+ (q = 1-5), O q+ (q = 1-5), Si q+ (q = 2-7) G16 Nutt et al [50] total C 2+ G16 Phaneuf et al [41] total C q+ (q = 3, 4), O q+ (q = 2-6) G16 Phaneuf et al [41] total C q+ (q = 5, 6) G16, MCLZ, RCMD Sant'Anna et al [51] total C 3+ G16 Ciric et al [52] total,nl C q+ (q = 3, 4), N 5+ , O 6+ G16 McCullough et al [53] total,nl C 3+ G16 Panov et al [42] total C 4+ , N 5+ , O 6+ , Ne 8+ G16 Panov et al [42] total C q+ (q = 5, 6), N q+ (q = 6, 7), O q+ (q = 7, 8), Ne q+ (q = 9, 10) G16, MCLZ, RCMD Dijkkamp et al [54] total,nl C q+ (q = 3, 4), N 5+ , O 6+ G16 Fritsch & Lin [55] total,nl C 4+ G16 Hoekstra et al [56] total,nl C 4+ G16 Stebbings et al [57] total N + , O + G16 Fite et al [58] total O + G16 Meyer et al [43] total B q+ (q = 2-5), C q+ (q = 3, 4), N q+ (q = 3, 4) G16 Meyer et al [43] total O q+ (q = 3-6), Si q+ (q = 4-9), Fe q+ (q = 4-15) G16 Meyer et al [43] total O q+ (q = 7, 8) G16, MCLZ, RCMD Havener et al [59] total O 5+ G16 Huber [60] total Ne q+ (q = 2-4), Ar q+ (q = 2-4, 6) G16 Kim et al [61] total Si q+ (q = 2-7) G16 Beijers et al [62] nl O 3+ G16 Rejoub et al [63] total Ne 3+ G16 Havener et al [64] total Ne 4+ G16 Bruhns et al [65] total Si 3+ G16 Havener et al [66] total C ...…”

Section: Referencementioning

confidence: 99%

Uncertainties in Atomic Data for Modeling Astrophysical Charge Exchange Plasmas

Shah

Zhang

2022

Sensors

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Relevant uncertainties of theoretical atomic data are vital to determining the accuracy of plasma diagnostics in a number of areas, including, in particular, the astrophysical study. We present a new calculation of the uncertainties on the present theoretical ion-impact charge exchange atomic data and X-ray spectra, based on a set of comparisons with the existing laboratory data obtained in historical merged-beam, cold-target recoil-ion momentum spectroscopy, and electron beam ion traps experiments. The average systematic uncertainties are found to be 35–88% on the total cross sections, and 57–75% on the characteristic line ratios. The model deviation increases as the collision energy decreases. The errors on total cross sections further induce a significant uncertainty to the calculation of ionization balance for low-temperature collisional plasmas. Substantial improvements of the atomic database and dedicated laboratory measurements are needed to obtain the current models, ready for the X-ray spectra from the next X-ray spectroscopic mission.

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“…In this paper, we address the problem of the influence of the metastable ion content of C 2+ beams impinging on H targets. We focus on the range of impact energies 0.1 < E < 300 keV, for which there are experimental [3,5,16,[18][19][20] and theoretical [21] data available for ground state projectiles, and a molecular approach is accurate, as will be discussed in the following.…”

Section: Introductionmentioning

confidence: 99%