Convergent-close-coupling calculations for excitation and ionization processes of electron-hydrogen collisions in Debye plasmas

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.052705· OSTI ID:21528649

Zammit, Mark C; Fursa, Dmitry V; Bray, Igor ^[1]

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1. Australian Research Council Centre for Antimatter-Matter Studies, Curtin University of Technology, GPO Box U1987, Perth, Western Australia 6845 (Australia)

Electron-hydrogen scattering in weakly coupled hot-dense plasmas has been investigated using the convergent-close-coupling method. The Yukawa-type Debye-Hueckel potential has been used to describe the plasma screening effects. The target structure, excitation dynamics, and ionization process change dramatically as the screening is increased. Excitation cross sections for the 1s{yields}2s,2p,3s,3p,3d and 2s{yields}2p,3s,3p,3d transitions and total and total ionization cross sections for the scattering from the 1s and 2s states are presented. Calculations cover the energy range from thresholds to high energies (250 eV) for various Debye lengths. We find that as the screening increases, the excitation and total cross sections decrease, while the total ionization cross sections increase.

• OSTI ID: 21528649
• Journal Information: Physical Review. A, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevA.82.052705; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
COUPLING
DEBYE LENGTH
ELECTRONS
EV RANGE 100-1000
EXCITATION
HYDROGEN
IONIZATION
PLASMA
SCATTERING
SCREENING
TOTAL CROSS SECTIONS
WEAK INTERACTIONS
BASIC INTERACTIONS
CROSS SECTIONS
DIMENSIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
FERMIONS
INTERACTIONS
LENGTH
LEPTONS
NONMETALS