Effect of Target Polarization in Electron-Ion Recombination

Korol, Andrey V.; Gribakin, G. F.; Currell, Frederick

doi:10.1103/physrevlett.97.223201

Cited by 11 publications

(9 citation statements)

References 32 publications

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“…Evidences that the omitted contribution might be significant were reported in Refs. [11,12], where a part of the off-resonant DR (involving photon emission from a core electron) was studied. It was claimed that, for many-electron systems, this mechanism can significantly influence the RR process, yielding an order-of-magnitude enhancement in some specific cases.…”

Section: Introductionmentioning

confidence: 99%

Off-resonant dielectronic recombination in a collision of an electron with a heavy hydrogenlike ion

Yerokhin

Surzhykov

2010

Phys. Rev. A

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The recombination of an electron with an (initially) hydrogen-like ion is investigated. The effect of the electron-electron interaction is treated rigorously to the first order in the parameter 1/Z and within the screening-potential approximation to higher orders in 1/Z, with Z being the nuclear charge number. The two-electron correction contains the dielectronic-recombination part, which contributes to the process not only under the resonance condition for the projectile energy but also in the regions far from resonances. The mechanism of the off-resonant dielectronic recombination is studied in detail.

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Section: Introductionmentioning

confidence: 99%

Off-resonant dielectronic recombination in a collision of an electron with a heavy hydrogenlike ion

Yerokhin

Surzhykov

2010

Phys. Rev. A

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“…for Ga and N, respectively. The exchange and correlation effects have been taken into account within the generalized gradient approximation (GGA) formalism suggested by Perdew, Burke and Ernzerhof (PBE) [7], particularly in the form of hybrid PBE functional with Hartree-Fock exchange, PBE0 [8]. The program AtomPAW provides the full set of data that are input parameters for the ABIN-IT code [3,9] initialization.…”

Section: Calculation Of the Electron Wave Functionmentioning

confidence: 99%

Electron Scattering on the Short-range Potential of the Point Defects in Sphalerite GaN: Calculation from the First Principles

Malyk¹,

Syrotyuk²

2017

J. Nano- Electron. Phys.

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The electron scattering processes in sphalerite gallium nitride on the different lattice point defects are considered. The short-range principle is taken into account in all the calculations. The transition matrix elements have been evaluated by using the self-consistent wave function and potential obtained within the ab initio density functional theory. This approach avoids the problem of using the fitting parameters for the six electron scattering mechanisms. The temperature dependences of electron mobility in the range 30-300 K are calculated. The results obtained with short-range scattering models reveal a better agreement with experiment than with the long-range scattering ones. For the first time the electron transport properties have been obtained here on base of the short-range scattering models, with derived by projector augmented waves self-consistent eigenfunctions and potentials, calculated from the first principles.

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“…Quantum interference between RR and DR for highly-charged ions was first considered in [30]. In energy regions free from dielectronic resonances, PRR is the dominant process, where its main effect is the enhancement of the RR background [31,32]. Such non-resonance photon energy ranges for polarization of the n j shells may be written as:…”

Section: Model Used In Calculationsmentioning

confidence: 99%

“…The term σ prr was shown in [29,31,32] to be much less than σ rr , i.e., σ prr /σ rr 1. Therefore, it is the interference term σ int , which is responsible for the RRCS enhancement.…”

Section: Model Used In Calculationsmentioning

confidence: 99%

Radiative Recombination and Photoionization Data for Tungsten Ions. Electron Structure of Ions in Plasmas

Trzhaskovskaya

Nikulin

2015

Atoms

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Theoretical studies of tungsten ions in plasmas are presented. New calculations of the radiative recombination and photoionization cross-sections, as well as radiative recombination and radiated power loss rate coefficients have been performed for 54 tungsten ions for the range W 6+ -W 71+ . The data are of importance for fusion investigations at the reactor ITER, as well as devices ASDEX Upgrade and EBIT. Calculations are fully relativistic. Electron wave functions are found by the Dirac-Fock method with proper consideration of the electron exchange. All significant multipoles of the radiative field are taken into account. The radiative recombination rates and the radiated power loss rates are determined provided the continuum electron velocity is described by the relativistic Maxwell-Jüttner distribution. The impact of the core electron polarization on the radiative recombination cross-section is estimated for the Ne-like iron ion and for highly-charged tungsten ions within an analytical approximation using the Dirac-Fock electron wave functions. The effect is shown to enhance the radiative recombination cross-sections by < ∼ 20%. The enhancement depends on the photon energy, the principal quantum number of polarized shells and the ion charge. The influence of plasma temperature and density on the electron structure of ions in local thermodynamic equilibrium plasmas is investigated.Results for the iron and uranium ions in dense plasmas are in good agreement with previous calculations. New calculations were performed for the tungsten ion in dense plasmas on the basis of the average-atom model, as well as for the impurity tungsten ion in fusion plasmas using the non-linear self-consistent field screening model. The temperature and density dependence of the ion charge, level energies and populations are considered.Atoms 2015, 3 87

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Effect of Target Polarization in Electron-Ion Recombination

Cited by 11 publications

References 32 publications

Off-resonant dielectronic recombination in a collision of an electron with a heavy hydrogenlike ion

Off-resonant dielectronic recombination in a collision of an electron with a heavy hydrogenlike ion

Electron Scattering on the Short-range Potential of the Point Defects in Sphalerite GaN: Calculation from the First Principles

Radiative Recombination and Photoionization Data for Tungsten Ions. Electron Structure of Ions in Plasmas

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