Quantum-mechanical calculation of Stark widths of Ne VII n=3, $Δ n=0$ transitions

Details Quantum-mechanical calculation of Stark widths of Ne VII n=3, $Δ n=0$ transitions Quantum-mechanical calculation of Stark widths of Ne VII n=3, $Δ n=0$ transitions

1998-11-30

arxiv.org/abs/physics/9811057v1

Physics

Atomic Physics

8 pages, 3 figures; accepted by Phys. Rev. A

Scientific paper

10.1103/PhysRevA.59.1890

The Stark widths of the Ne VII 2s3s-2s3p singlet and triplet lines are calculated in the impact approximation using quantum-mechanical Convergent Close-Coupling and Coulomb-Born-Exchange approximations. It is shown that the contribution from inelastic collisions to the line widths exceeds the elastic width contribution by about an order of magnitude. Comparison with the line widths measured in a hot dense plasma of a gas-liner pinch indicates a significant difference which may be naturally explained by non-thermal Doppler effects from persistent implosion velocities or turbulence developed during the pinch implosion. Contributions to the line width from different partial waves and types of interactions are discussed as well.

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