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Phys. Rev. A 59, 1890 - 1895 (1999)

Quantum-mechanical calculation of Stark widths of Ne vii n=3, Δn=0 transitions

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Yuri V. Ralchenko *
Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100, Israel

Hans R. Griem †
Institute for Plasma Research, University of Maryland, College Park, Maryland 20742

Igor Bray ‡ and Dmitry V. Fursa §
Electronic Structure of Materials Centre, School of Physical Sciences, The Flinders University of South Australia, G.P.O. Box 2100, Adelaide 5001, Australia

Received 1 September 1998

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 linewidths exceeds the elastic width contribution by about an order of magnitude. Comparison with the linewidths measured in a hot dense plasma of a gas-liner pinch indicates a significant difference which may be naturally explained by nonthermal Doppler effects from persistent implosion velocities or turbulence developed during the pinch implosion. Contributions to the linewidth from different partial waves and types of interactions are discussed as well.


©1999 The American Physical Society

URL: http://link.aps.org/abstract/PRA/v59/p1890
DOI: 10.1103/PhysRevA.59.1890
PACS: 32.70.Jz, 34.80.Kw, 52.55.Ez

* Electronic address: fnralch@plasma-gate.weizmann.ac.il
† Electronic address: griem@glue.umd.edu
‡ Electronic address: igor@yin.ph.flinders.edu.au
§ Electronic address: dmitry@yin.ph.flinders.edu.au

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