Electron–hydrogen-atom elastic and inelastic scattering with screened Coulomb interaction around the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>n</mml:mi><mml:mo>=</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math>excitation threshold

Zhang, Song Bin; Wang, Jingguo; Janev, R.K.

doi:10.1103/physreva.81.032707

Cited by 67 publications

(47 citation statements)

References 34 publications

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“…When the 3 P o (2) and 1 is also observed after passing the 2s threshold at D=19 a.u. [28,29]. Similar phenomena are also observed near the n=3 threshold, but the situation is more complex, since the threshold energy in the screened case is split into three components, with 3s, 3p, 3d energy levels having their own critical screening lengths [29].…”

Section: Electron Collisionssupporting

confidence: 56%

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Review of quantum collision dynamics in Debye plasmas

Janev

Zhang

Wang

2016

Matter and Radiation at Extremes

144

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Hot, dense plasmas exhibit screened Coulomb interactions, resulting from the collective effects of correlated many-particle interactions. In the lowest particle correlation order (pair-wise correlations), the interaction between charged plasma particles reduces to the Debye-Hückel (Yukawa-type) potential, characterized by the Debye screening length D. Due to the importance of Coulomb interaction screening in dense laboratory and astrophysical plasmas, hundreds of theoretical investigations have been carried out in the past few decades on the plasma screening effects on the electronic structure of atoms and their collision processes employing the Debye-Hückel screening model. The present article aims at providing a comprehensive review of the recent studies in atomic physics in Debye plasmas. Specifically, the work on atomic electronic structure, photon excitation and ionization, electron/positron impact excitation and ionization, and excitation, ionization and charge transfer of ion-atom/ion collisions will be reviewed.

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Section: Electron Collisionssupporting

confidence: 56%

“…(A more detailed description of the crossover of Feshbach resonances to shape resonances is given the next section and in Refs. [28,29]). Due to the softening of the screening potentials, the positions of the peaks or the resonances shift to the lower energies.…”

Section: Photon Collisionsmentioning

confidence: 99%

Review of quantum collision dynamics in Debye plasmas

Janev

Zhang

Wang

2016

Matter and Radiation at Extremes

144

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“…Electron-impact ionization of atoms in high-temperature dense plasmas was investigated by Pindzola et al [10] using a configuration-average distortedwave method. The effects of screened Coulomb interaction on electron-hydrogen collisions [11,12] and photodetachment [13] have been explored using the R-matrix method with pseudostates. Zammit et al have implemented the convergent close-coupling method to explore the electron-hydrogen [14] and electron-helium collisions [15] in Debye plasmas.…”

Section: Introductionmentioning

confidence: 99%

Spectral data of helium atoms with screened Coulomb potentials using theB-spline approach

Lin

2012

Phys. Rev. A

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In this work, we present spectral data of helium atoms with the screened Coulomb interactions using the B-spline configuration interaction approach. One of the challenges that we face is the electron-electron interaction under the screening effect. Instead of using explicitly correlated exponential wave functions which depend on the interelectron distance, we expand the screened electron-electron potential utilizing the Gegenbauers addition theorem for the separation of the radial variables. Several energies of the 1,3 S, 1,3 P , and 1,3 D states varying with screening parameters are reported. It is noted that the screening effects lead to the level crossings for high-lying states. We demonstrate the influence of screening on the oscillator strengths for the transitions of 1 S-1 P , 3 S-3 P , 1 P -1 D, and 3 P -3 D. The variation of the multipole polarizabilities, such as dipole, quadrupole, and octupole, with the screening effect is reported.

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“…* mark.zammit@student.curtin.edu.au It has been shown that the Debye-Hückel potential Eq. (1) can lead to significant modification of the electron-atom scattering processes by affecting the atomic structure [9][10][11][12][13][14][15][16][17][18][19][20] and excitation dynamics [21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…Ghoshal and Ho find that as the screening increases the elastic cross section (CS) increase at energies below the n = 2 excitation threshold. Recently, Zhang et al described low-energy electron-hydrogen scattering using the R-matrix method concentrating on Feshbach resonances near the n = 2 [22,23] and n = 3 [24] excitation threshold regions. Highenergy electron-hydrogen excitation processes have been investigated by Qi et al [21] and Hatton et al [27] using the first Born approximation (FBA).…”

Section: Introductionmentioning

confidence: 99%

Electron-helium scattering in Debye plasmas

2011

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Electron-helium scattering in weakly coupled hot-dense (Debye) plasma has been investigated using the convergent close-coupling method. The Yukawa-type Debye-Hückel potential has been used to describe plasma Coulomb screening effects. Benchmark results are presented for momentum transfer cross sections, excitation, ionization, and total cross sections for scattering from the ground and metastable states of helium. Calculations cover the entire energy range up to 1000 eV for the no screening case and various Debye lengths (5-100 a 0 ). We find that as the screening interaction increases, the excitation and total cross sections decrease, while the total ionization cross sections increase.

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Electron–hydrogen-atom elastic and inelastic scattering with screened Coulomb interaction around then=2excitation threshold

Cited by 67 publications

References 34 publications

Review of quantum collision dynamics in Debye plasmas

Review of quantum collision dynamics in Debye plasmas

Spectral data of helium atoms with screened Coulomb potentials using theB-spline approach

Electron-helium scattering in Debye plasmas

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