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Theoretical study on dielectronic recombination of O$$^{6+}$$ ions in metastable states

Zhao, L.-B.*; Shirai, Toshizo

A computational scheme, based on the theory of continuum-bound transitions of Bell and Seaton [J. Phys. B $${bf 18}$$, 1589 (1985)] and the close-coupling R-matrix approach, has been developed to treat dielectronic recombination (DR) in high-lying resonance energy regions. This scheme and our presented numerical method to compute DR in low-lying resonance energy regions [Phys. Rev. A $${bf 62}$$, 022706 (2000)] have been applied together to elucidate the experimental spectra of DR of O$$^{6+}$$ ions in the metastable $$1s2s,,^3S$$ and $$1s2s,,^1S$$ states. For comparison, a perturbative theoretical calculation of DR for O$$^{6+}$$ has also been accompanied. The reasonable representation of the general dielectronic spectral shape is yielded by both our close-coupling and perturbative calculations. However, both the methods do not reproduce the experimental double peak structure at $$sim$$ 6-8 eV. This shows that the further investigation on DR of this kind of ions is required both experimentally and theoretically.

Language

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English

Journal

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Physical Review A

Volume

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64

Number

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5

Pages

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p.052704_1 - 052704_6

Publication Year/Month

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2001/11

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Held date

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Patent information

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Paper URL

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https://doi.org/10.1103/PhysRevA.64.052704

DOI for research data

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Keywords

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dielectronic recombination; O$$^{6+}$$ ions; $$1s2s,,^3S$$; $$1s2s,,^1S$$; close-coupling

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

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