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Article Dans Une Revue Journal of Quantitative Spectroscopy and Radiative Transfer Année : 1997

Quasi-molecular emission from highly correlated plasmas

Résumé

The present work reports results on quasi-molecular emission from hot dense plasmas. Results from Molecular Dynamics simulations are first presented which show that a treatment of bound states in terms of two-centre wavefunctions is possible in plasmas under specific conditions. A theoretical model for describing the transient molecular behaviour in hot dense plasmas is then proposed and applied to the case of a transient F8+/F9+ molecular ion. We demonstrate that two electronic transitions (namely, using the spherical quantum numbers, 541(g)-210(u) and 650(u)-100(g)) related to this transient structure can be exhibited in experimental spectra from laser-produced plasmas implying high density conditions. These predictions are shown to be in excellent agreement with results from colliding foil experiments which have led to the exhibition of a low-energy satellite-like feature on the profile of the FLy beta line having no explanation in terms of standard line profile theories. (C) 1997 Published by Elsevier Science Ltd. All rights reserved.

Dates et versions

hal-01796364 , version 1 (19-05-2018)

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P Gauthier, P Sauvan, P Angelo, S Alexiou, E Leboucher-Dalimer, et al.. Quasi-molecular emission from highly correlated plasmas. Journal of Quantitative Spectroscopy and Radiative Transfer, 1997, 58 (4-6), pp.597-606. ⟨10.1016/S0022-4073(97)00066-6⟩. ⟨hal-01796364⟩
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