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Article Dans Une Revue The European Physical Journal D : Atomic, molecular, optical and plasma physics Année : 2007

Coupling and ionization effects on hydrogen spectral line shapes in dense plasmas

Résumé

A study of hydrogen lines emitted in dense and low temperature plasmas is presented. Coupling and ionization effects in a transition from impact to quasi-static broadening for electrons are analyzed with the help of the Frequency Fluctuation Model (FFM). Electron broadening of Balmer series lines is studied for different densities and temperatures spanning a wide domain from impact to quasi-static limit. It is shown that electronic broadening makes a transition from impact to quasi-static limit depending on plasma conditions and principal quantum number. Even for the Balmer alpha line, at a density equals 10^18 cm^-3 and a temperature equals 1 eV, this transition occurs both in the wings and the core of the line.

Dates et versions

hal-00140245 , version 1 (05-04-2007)

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Annette Calisti, L.A. Bureyeva, Valery Lisitsa, Dmitry Shuvaev, Bernard Talin. Coupling and ionization effects on hydrogen spectral line shapes in dense plasmas. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2007, 42, pp.387. ⟨10.1140/epjd/e2007-00139-0⟩. ⟨hal-00140245⟩

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