Electron-helium scattering in Debye plasmas

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.052705· OSTI ID:22093525

Zammit, Mark C.; Fursa, Dmitry V.; Bray, Igor ^[1]; Janev, R. K. ^[2]

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1. ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, WA 6845 (Australia)
2. Macedonian Academy of Sciences and Arts, P.O. Box 428, 1000 Skopje (Macedonia, The Former Yugoslav Republic of)

Electron-helium scattering in weakly coupled hot-dense (Debye) plasma has been investigated using the convergent close-coupling method. The Yukawa-type Debye-Hueckel 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{sub 0}). We find that as the screening interaction increases, the excitation and total cross sections decrease, while the total ionization cross sections increase.

• OSTI ID: 22093525
• Journal Information: Physical Review. A, Vol. 84, Issue 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BENCHMARKS
COULOMB FIELD
COUPLING
DEBYE LENGTH
ELECTRON-ATOM COLLISIONS
ELECTRONS
ENERGY DEPENDENCE
EV RANGE
EXCITATION
HELIUM
HOT PLASMA
IONIZATION
METASTABLE STATES
MOMENTUM TRANSFER
POTENTIALS
SCATTERING
TOTAL CROSS SECTIONS