Electron-helium scattering in Debye plasmas
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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 a0). 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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Convergent-close-coupling calculations for excitation and ionization processes of electron-hydrogen collisions in Debye plasmasZammit, M.; Fursa, Dmitry; Bray, Igor (2010)Electron-hydrogen scattering in weakly coupled hot-dense plasmas has been investigated using the convergent-close-coupling method. The Yukawa-type Debye-Hckel potential has been used to describe the plasma screening ...
Zammit, M.; Fursa, Dmitry; Bray, Igor (2011)The immense progress in the field of electron–atom scattering, where pure Coulomb potentials are involved, has been translated to collision processes in Debye plasmas. The Debye–Hückel potential is used to describe plasma ...
Zammit, Mark; Fursa, Dmitry; Bray, Igor (2012)Hot-dense plasmas have direct industrial applications in inertial confinement fusion. We have used the convergent close-coupling (CCC) method to investigate electron scattering off hydrogen and helium atoms in a hot-dense ...