中文
相关论文

相关论文: The electron energy-loss rate due to radiative rec…

200 篇论文

We have calculated partial final-state resolved radiative recombination (RR) rate coefficients from the initial ground and metastable levels of all elements up to and including Zn, plus Kr, Mo, and Xe, for all isoelectronic sequences up to…

天体物理学 · 物理学 2009-11-11 N. R. Badnell

The level-resolved radiative recombination (RR) rate coefficients for H-like to Na-like ions from H (Z = 1) up to and including Zn (Z = 30) are studied here. For H-like ions, the quantum-mechanical exact photoionization cross sections for…

高能天体物理现象 · 物理学 2016-02-24 Junjie Mao , Jelle Kaastra

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

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

Reliably interpreting spectra from electron-ionized cosmic plasmas requires accurate ionization balance calculations for the plasma in question. However, much of the atomic data needed for these calculations have not been generated using…

天体物理学 · 物理学 2009-11-11 P. Bryans , N. R. Badnell , T. W. Gorczyca , J. M. Laming , W. Mitthumsiri , D. W. Savin

The first complete set of unified cross sections and rate coefficients are calculated for photoionization and recombination of He- and Li-like ions using the relativistic Breit-Pauli R-matrix method. We present total, unified (e + ion)…

天体物理学 · 物理学 2016-08-30 Sultana N. Nahar , Anil K. Pradhan , Hong Lin Zhang

We report measured rate coefficients for electron-ion recombination for Si10+ forming Si9+ and for Si9+ forming Si8+, respectively. The measurements were performed using the electron-ion merged-beams technique at a heavy-ion storage ring.…

Photoionization and recombination cross sections and rate coefficients are calculated for Li-like Fe XXIV and He-like Fe XXV using the Breit-Pauli R-matrix (BPRM) method. A complete set of total and level-specific parameters is obtained to…

天体物理学 · 物理学 2009-10-31 Sultana N. Nahar , Anil K. Pradhan , Hong Lin Zhang

We present the first detailed ab initio quantum mechanical calculations for total and state-specific recombination rate coefficients for e + Ni III --> Ni II. These rates are obtained using a unified treatment for total electron-ion…

天体物理学 · 物理学 2009-11-06 Sultana N. Nahar , Manuel A. Bautista

Aimed at ionization balance and spectral analysis of UV and X-ray sources, we present self-consistent sets of photoionization cross sections, recombination cross sections, and rate coefficients for Li-like O VI and He-like O VII.…

天体物理学 · 物理学 2009-11-07 Sultana N. Nahar , Anil K. Pradhan

Here we report new ${\it ab initio}$ calculations of the effective recombination coefficients for the \ion{N}{ii} recombination spectrum. We have taken into account the density dependence of the coefficients arising from the relative…

太阳与恒星天体物理 · 物理学 2015-05-27 X. Fang , P. J. Storey , X. -W. Liu

We have investigated the effects of a non-thermal electron population on the ionization and recombination rates. The considered electron distribution is defined as a Maxwellian function below a break energy E_b and as a power-law function…

天体物理学 · 物理学 2009-11-06 D. Porquet , M. Arnaud , A. Decourchelle

We present multi-configuration Breit-Pauli AUTOSTRUCTURE calculations of distorted-wave photoionization (PI) cross sections, and total and partial final-state resolved radiative recombination (RR) and dielectronic recombination (DR) rate…

太阳与恒星天体物理 · 物理学 2015-05-27 N. C. Sterling , Michael C. Witthoeft

Unified recombination cross sections and rates are computed for (e + Fe XVIII) --> Fe XVII including non-resonant and resonant (radiative and di-electronic recombination, RR and DR) processes in an ab initio manner with relativistic fine…

天体物理学 · 物理学 2009-10-31 Anil K. Pradhan , Sultana N. Nahar , Hong Lin Zhang

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

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

Most astrophysical plasmas entail a balance between ionization and recombination. We present new results from the powerful R-matrix method which yields in an ab initio manner: (I) self-consistent photoionization and recombination cross…

天体物理学 · 物理学 2007-05-23 Sultana N. Nahar

Theoretically self-consistent calculations for photoionization and (e + ion) recombination are described. An identical eigenfunction expansion for the ion is employed in coupled channel calculations for both processes, thus ensuring…

天体物理学 · 物理学 2007-05-23 Sultana N. Nahar

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…

The inverse processes of photoionization and electron-ion recombination of (hnu + Ni XXVI --> Ni XXVII + e and (hnu + Ni XXVII --> Ni XXVIII + e) are studied using the unified method for the total recombination. The method subsumes both the…

天体物理学 · 物理学 2009-11-10 Sultana N. Nahar
‹ 上一页 1 2 3 10 下一页 ›