Weighted oscillator strengths and lifetimes for the SiVI spectrum

The weighted oscillator strengths (g f) and the lifetimes for Si VI presented in this work were carried out in a multiconfiguration Hartree-Fock relativistic (HFR) approach. In this calculation, the electrostatic parameters were optimized by a least squares procedure, in order to improve the adjustment to experimental energy levels. This method produces gf-values that are in better agreement with intensity observations and lifetime values that are closer to the experimental ones. In this work we presented all the experimentally known electric dipole Si VI spectral lines.121259159

ENERGY-LEVELS OF THE CONFIGURATIONS 4S(2)4P, 4S4P2, 4S(2)4D, AND 4S(2)5P IN KR VI, OBTAINED FROM A 0-PINCH LIGHT-SOURCE

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Atomic transitions for the Ar VII spectrum in the vacuum ultraviolet

Two different spectroscopy light sources are used to observe the spectrum of six-times-ionized argon, Ar VII, in the vacuum ultraviolet range, 300-1100 Angstrom. Fifty-eight transitions are identified as combinations between levels of the 2p(6) (3s(2) + 3p(2) + 3s3d) and 2p(6)(3s3p + 3p3d + 3s4p) configurations. For 44 of these transitions the classification is new. Twenty-nine levels are determined that belong to these configurations, where 14 of these are new. The energy parameters are obtained with Hartree-Fock relativistic calculations. The energy levels of the configurations are interpreted by fitting the theoretical energy expressions to the experimental levels with the least-squares approach. Isoelectronic comparisons along the Mg I sequence are used to support the experimental results. (C) 1997 Optical Society of America.14102463246

3 d(2) configuration in six-times-ionized argon, ArVII

The transition array 2p(6)3p3d-2p(6)3d(2) has been identified in the spectrum of magnesium-like Ar vii produced by electrical discharges in the vacuum-ultraviolet region. Twenty-five new transitions have been identified as combinations of levels of this transition array. From these transitions we have determined the levels of the 3d(2) configuration. It was also possible to determine the 2p(6)3p3d(1)D(2)(o) level that was missed in the early research with the Ar vii spectrum. Hartree-Fock calculations with relativistic corrections were used to predict energy levels and transitions. Isoelectronic comparisons along the Mg I sequence are used to support the experimental results. (C) 2001 Optical Society of America.18111718172

Studies of the collision-based Xe VI and Xe VII spectra

Collision-based spectroscopy of a Xeq+ (q = 6, 7) beam with a target T (T = Na, Ar) has been performed in the 35-800-nm wavelength region. Twenty-five new Xe VI lines and twenty-two new Xe VII lines were classified, twelve new energy levels of Xe VI and nine new energy levels of Xe VII were established, and one energy level of Xe VI was revised from the classified transitions. The analysis was supported by Hartree-Fock calculations. (C) 1997 Optical Society of America [S0740-3224(97)00512-2].14123277328

Weighted oscillator strengths for Si V spectrum

The weighted oscillator strengths (gf) presented in this work were carried out in a Multiconfigurational Hartree-Fock Relativistic (HFR) approach. In this calculation, the electrostatic parameters were optimized by a least-square procedure, in order to improve the adjustment to experimental energy levels. This method produces gf values that are in better agreement with line intensity observations. In this work we revised all the experimentally known electric dipole Si V spectrum lines. Copyright (C) 1996 Elsevier Science Ltd56571372

Weighted oscillator strengths and lifetimes for the Si VII spectrum

The weighted oscillator strengths (gf) and the lifetimes presented in this work were carried out in a multiconfiguration Hartree-Fock relativistic approach. In this calculation, the electrostatic parameters were optimized by a least-squares procedure in order to improve the adjustment to experimental energy levels. This method produces gf-values that are in better agreement with intensity observations and lifetime values that are closer to the experimental ones. In this work we revised all the experimentally known electric dipole Si VII spectrum lines.115231531

Weighted oscillator strengths and lifetimes for the SiI spectrum

The weighted oscillator strengths (gf) and the lifetimes for Si I presented in this work were carried out in a multiconfiguration Hartree-Fock relativistic approach. In this calculation, the electrostatic parameters were optimized by a least-squares procedure, in order to improve the adjustment to experimental energy levels. This method produces gf-values that are in better agreement with intensity observations and lifetime values that are closer to the experimental ones. In this work we present all the experimentally known electric dipole Si I spectral lines. (C) 2002 Elsevier Science Ltd. All rights reserved.75335738

Weighted oscillator strengths and lifetimes for the Si XII and Si XIII spectra

The weighted oscillator strengths (gf) and the lifetimes for Si XII and Si XIII presented in this work were carried out in a multiconfiguration Hartree-Fock relativistic (HFR) approach. In this calculation, the electrostatic parameters were optimized by a least-squares procedure, in order to improve the adjustment to experimental energy levels. This method produces gf-values that are in better agreement with intensity observations and lifetime values that are closer to the experimental ones. In this work we present all the experimentally known electric dipole Si XII and Si XIII spectral lines. (C) 2001 Elsevier Science Ltd. All rights reserved.72448549

Weighted oscillator strengths and lifetimes for the SiVIII spectrum

The weighted oscillator strengths (gf) and the lifetimes for Si VIII presented in this work were carried out in a multiconfiguration Hartree-Fock relativistic (HFR) approach. In this calculation, the electrostatic parameters were optimized by a least-squares procedure, in order to improve the adjustment to experimental energy levels. This method produces gf-values that are in good agreement with intensity observations and lifetime values that are closer to the experimental ones. In this work we present all the experimentally known electric dipole Si VIII spectral lines. (C) 2001 Published by Elsevier Science Ltd.691132