Electron--ion collisional excitations in strongly coupled plasmas using the ion-sphere model

Journal Article · Mon May 01 04:00:00 EDT 1995 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871326· OSTI ID:165191

Jung, Y ^[1]

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1. Department of Physics, Hanyang University, Ansan, Kyunggi-Do 425-791 (Korea, Republic of)

In strongly coupled plasmas, screening effects are investigated on 1{ital s}{r_arrow}2{ital p} dipole transition probabilities for electron-impact excitation of hydrogenic ions. Electron--ion interaction is described by the ion-sphere model potential. Behavior of the projectile electron is represented by the semiclassical straight-line trajectory method. Variation of the transition probabilities is determined as a function of the plasma-screening strength through the size of the ion sphere. The transition probabilities are increased with an increase of the ion-sphere radius and the projectile energy. These results, in strongly coupled plasmas, are similar to the screening effects on 1{ital s}{r_arrow}2{ital p} dipole transition probabilities for electron--ion excitations in weakly coupled plasmas described by the classical Debye--Hueckel model. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

• OSTI ID: 165191
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 2; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONAL PLASMA
ELECTRON-ION COLLISIONS
EXCITED STATES
HYDROGEN IONS
SCREENING
SEMICLASSICAL APPROXIMATION
WIGNER-SEITZ METHOD