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相关论文: Dielectronic Recombination Rates In Astrophysical …

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We present a theoretical investigation of dielectronic recombination (DR) of Ar-like ions that sheds new light on the behavior of the rate coefficient at low-temperatures where these ions form in photoionized plasmas. We provide results for…

原子物理 · 物理学 2013-03-13 D. Nikolić , T. W. Gorczyca , K. T. Korista , N. R. Badnell

Dielectronic recombination (DR) of xenonlike W20+ forming W19+ has been studied experimentally at a heavy-ion storage-ring. A merged-beams method has been employed for obtaining absolute rate coefficients for electron-ion recombination in…

In photoionized gases with cosmic abundances, dielectronic recombination (DR) proceeds primarily via nlj --> nl'j' core excitations (Dn=0 DR). We have measured the resonance strengths and energies for Fe XVIII to Fe XVII and Fe XIX to Fe…

This study presents calculations of rate coefficients, resonance strengths, and cross sections for the dielectronic recombination (DR) of $\text{Y}^{+}$, $\text{Sr}^{+}$, $\text{Te}^{2+}$, and $\text{Ce}^{2+}$-low-charge ions relevant to…

高能天体物理现象 · 物理学 2025-08-13 Suvam Singh , Zoltán Harman , Christoph H. Keitel

We examine the effects of low-temperature, or $\Delta$$n = 0$, dielectronic recombination (DR) on the ionization balance of the Fe M-Shell (Fe IX through Fe XVI). Since $\Delta$$n = 0$ rates are not available for these ions, we have derived…

天体物理学 · 物理学 2009-11-10 S. B. Kraemer , G. J. Ferland , J. R. Gabel

A recent measurement of the dielectronic recombination (DR) of W^20+ [Schippers et al Phys. Rev. A83, 012711 (2011)] found an exceptionally large contribution from near threshold resonances (<1eV). This still affected the Maxwellian rate…

原子物理 · 物理学 2012-04-11 N. R. Badnell , C. P. Ballance , D. C. Griffin , M. O'Mullane

We have developed a general model for determining density-dependent effective dielectronic recombination (DR) rate coefficients in order to explore finite-density effects on the ionization balance of plasmas. Our model consists of…

原子物理 · 物理学 2015-06-15 D. Nikolić , T. W. Gorczyca , K. T. Korista , G. J. Ferland , N. R. Badnell

Dielectronic recombination (DR) is the dominant mode of recombination in magnetically confined fusion plasmas for intermediate to low-charged ions of W. Complete, final-state resolved partial isonuclear W DR rate coefficient data is…

原子物理 · 物理学 2017-05-24 S. P. Preval , N. R. Badnell , M. G. O'Mullane

Dielectronic recombination (DR) is a key atomic process which affects the spectroscopic diagnostic modelling of tungsten, most of whose ionization stages will be found somewhere in the ITER fusion reactor: in the edge, divertor, or core…

原子物理 · 物理学 2016-04-25 S. P. Preval , N. R. Badnell , M. G. O'Mullane

The low energy C IV dielectronic recombination (DR) rate coefficient associated with 2s-2p Delta n=0 excitations of this lithiumlike ion has been measured with high energy-resolution at the heavy-ion storage-ring TSR of the…

天体物理学 · 物理学 2009-11-06 S. Schippers , A. Mueller , G. Gwinner , J. Linkemann , A. A. Saghiri , A. Wolf

Using published measurements of dielectronic recombination (DR) resonance strengths and energies for C V to C IV and O VIII to O VII, we have calculated the DR rate coefficient for these ions. Our derived rates are in good agreement with…

天体物理学 · 物理学 2009-10-31 D. W. Savin

This review summarizes the present status of an ongoing experimental effort to provide reliable rate coefficients for dielectronic recombination of highly charged iron ions for the modeling of astrophysical and other plasmas. The…

原子与分子团簇 · 物理学 2024-09-30 S. Schippers , M. Lestinsky , A. Müller , D. W. Savin , E. W. Schmidt , A. Wolf

We have measured the resonance strengths and energies for dielectronic recombination (DR) of Fe XX forming Fe XIX via N=2 --> N'=2 (Delta_N=0) core excitations. We have also calculated the DR resonance strengths and energies using…

We have carried-out multi-configuration Breit-Pauli AUTOSTRUCTURE calculations for the dielectronic recombination (DR) of Fe^{8+} - Fe^{12+} ions. We obtain total DR rate coefficients for the initial ground-level which are an order of…

天体物理学 · 物理学 2010-11-11 N. R. Badnell

We have investigated dissociative recombination (DR) of NH$^+$ with electrons using a merged beams configuration at the TSR heavy-ion storage ring located at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. We present…

天体物理仪器与方法 · 物理学 2014-08-28 O. Novotný , M. Berg , D. Bing , H. Buhr , W. Geppert , M. Grieser , F. Grussie , C. Krantz , M. B. Mendes , C. Nordhorn , R. Repnow , D. Schwalm , B. Yang , A. Wolf , D. W. Savin

We aim to present a comprehensive theoretical investigation of dielectronic recombination (DR) of the silicon-like isoelectronic sequence and provide DR and radiative recombination (RR) data that can be used within a generalized…

原子物理 · 物理学 2018-03-14 Jagjit Kaur , T. W. Gorczyca , N. R. Badnell

We survey the results of a long-term study of the process of radiative recombination. A rigorous theory of nonrelativistic electron radiative recombination with a hydrogen-like ion is used to calculate the total cross section of the…

原子物理 · 物理学 2019-03-27 Igor A. Kotelnikov , Alexander I. Milstein

Tungsten is an important element for magnetically confined fusion plasmas but has the potential to cool, or even quench the plasma due to it being an efficient radiator. Total and level-resolved dielectronic recombination (DR) rate…

原子物理 · 物理学 2018-11-27 S. P. Preval , N. R. Badnell , M. G. O'Mullane

The accuracy of dielectronic recombination (DR) data for astrophysics related ions plays a key role in astrophysical plasma modeling. The measurement of the absolute DR rate coefficient of Fe17+ ions was performed at the main cooler storage…

We have measured resonance strengths and energies for dielectronic recombination (DR) of Mg-like Fe XV forming Al-like Fe XIV via N=3 -> N' = 3 core excitations in the electron-ion collision energy range 0-45 eV. All measurements were…

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