Quantum unified theory applied to Ly$\mathsf{\beta}$, Lyγ and Lyδ electronic Stark broadening

Autor:	O. Motapon, N. Feautrier, A. de Kertanguy
Rok vydání:	2005
Předmět:	Physics Astronomy and Astrophysics Electron Resonance (particle physics) Dipole symbols.namesake Stark effect Space and Planetary Science Total angular momentum quantum number Quantum mechanics Atom symbols Unified field theory Debye
Zdroj:	Astronomy & Astrophysics. 432:1131-1135
ISSN:	1432-0746 0004-6361
DOI:	10.1051/0004-6361:20042167
Popis:	New quantum calculations for the Ly β , Ly γ , Ly δ profiles perturbed by electron collisions are obtained from the unified one-perturber theory in the exact resonance approximation (Tran-Minh et al. 1975, J. Phys. B: Atom. Molec. Phys., 8, 1810; Feautrier et al. [CITE], J. Phys. B: Atom. Molec. Phys., 9, 1871). This accounts for the-long range dipole interaction. The profiles are obtained by summing the partial contributions of each total angular momentum L T . It appears that there is a threshold $L_{\min}$ below which some eigenchannels become complex and are not well described by the exact resonance method. To overcome this problem, the contribution of the first angular momenta is estimated by taking into account the real eigenvalues and by neglecting the complex ones. Estimation of the error due to this systematic underestimation of the profile is given. Density effects due to the Debye screening are found in the near wings.
Databáze:	OpenAIRE
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