Electron impact ionization of hydrogen-like molybdenum ions

Watanabe, Hirofumi; Currell, Frederick; Kuramoto, H.; Ohtani, S.; O’Rourke, Brian; Tong, Xiao-Min

doi:10.1088/0953-4075/35/24/311

Cited by 20 publications

(12 citation statements)

References 23 publications

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“…For high Z values, in the case of DR, the fluorescence yield is dominated by the radiative decay and thus it approaches unity, whereas for small Z it is governed by the Auger rate, see following scaling law for the strength [34,35]:…”

Section: Resultsmentioning

confidence: 99%

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

et al. 2013

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Dielectronic and higher-order resonant electron recombination processes including a K-shell excitation were systematically measured at high resolution in electron beam ion traps. Storing highly charged Ar, Fe, and Kr ions, the dependence on atomic number Z of the contribution of these processes to the total recombination cross section was studied and compared with theoretical calculations. Large higher-order resonant recombination contributions are found, especially for systems with 10 < Z < 36. In some cases, they even surpass the strength of the dielectronic channel, which was hitherto presumed to be always the dominant one. These findings have consequences for the modeling of high-temperatur plasmas. Features attributed to inter-shell quadruelectronic recombination were also observed. The experimental data obtained for the He-like to O-like isoelectronic sequences compare well with the results of advanced relativistic distorted-wave calculations employing multiconfiguration Dirac-Fock bound state wave functions that include threefold and fourfold excitations.

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Section: Resultsmentioning

confidence: 99%

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

et al. 2013

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“…where Z is the atomic number and m 1 and m 2 are the free fit parameters [1]. By taking the present data and incorporating the results used in [1] the parameters m 1 and m 2 can be recalculated, to update the scaling law.…”

Section: Resultsmentioning

confidence: 99%

“…By taking the present data and incorporating the results used in [1] the parameters m 1 and m 2 can be recalculated, to update the scaling law. The scaling formula is derived from the scaling predicted for an isolated H-like resonance.…”

Section: Resultsmentioning

confidence: 99%

“…The scaling formula is derived from the scaling predicted for an isolated H-like resonance. It does not include the effects of QED; however, the formula has been shown phenomenologically to be applicable to collective groups of resonances in He-like target ions [1]. This applicability is because in the low-Z and high-Z limits the asymptotic form of the sum of resonance strengths for a group of independent resonances is the same as the asymptotic form of Eq.…”

Section: Resultsmentioning

confidence: 99%

“…Often in order to provide cross sections for atomic processes involving HCIs, scaling laws as a function of atomic number (Z) are generated. An example of such a scaling law is the He-like dielectronic recombination (DR) resonance strength scaling law developed by Watanabe et al [1]. This paper reports a study of resonance strengths, involving a change in the principal quantum number of the target ion ( n = 0), for open L-shell ions (Li-and Be-like) as a function of atomic number.…”

Section: Introductionmentioning

confidence: 99%

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Dielectronic recombination in He-like, Li-like, and Be-like highly charged ions in theKLLandKLMmanifolds

Kavanagh

Watanabe

et al. 2010

Phys. Rev. A

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This paper reports a systematic study of the dependence on atomic number of the dielectronic recombination resonance strengths for He-like, Li-like and Be-like ions. Recent measurements of dielectronic recombination resonance strengths for the KLL and KLM manifolds for iron, yttrium, iodine, holmium, and bismuth are also described. The resonance strengths were normalized to calculated electron impact ionization cross sections. The measured resonance strengths generally agree well with theoretical calculations using the distorted wave approximation. However, KLM resonance strength measurements on high atomic number open-shell ions gave higher values than those suggested by calculations. Using recently measured data, along with existing results, scaling laws have been generated as a function of atomic number for He-like, Li-like, and Be-like ions in the KLL and KLM manifolds.

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Emission and Laser Spectroscopy of Trapped Highly Charged Ions in Electron Beam Ion Traps

López‐Urrutia

Harman

2014

Springer Tracts in Modern Physics

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Research with highly charged ions addresses bound state quantum electrodynamics and relativistic atomic theory at their frontiers. Electron beam ion traps have provided practical means to study not only these fundamental fields, but also the physics of extremely hot plasmas in stars, active galactic nuclei, and fusion research plasma devices. Starting from the X-ray region, where the first experiments took place, this chapter will visit various regions of the electromagnetic spectrum and give a review of essential contributions of different groups to this field

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Electron impact ionization of hydrogen-like molybdenum ions

Cited by 20 publications

References 23 publications

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

Dielectronic recombination in He-like, Li-like, and Be-like highly charged ions in theKLLandKLMmanifolds

Emission and Laser Spectroscopy of Trapped Highly Charged Ions in Electron Beam Ion Traps

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