| 1. |
- Borges, F O, et al.
(författare)
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Weighted oscillator strengths and lifetimes for the SVII spectrum
- 2004
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Ingår i: Journal of Quantitative Spectroscopy & Radiative Transfer. - 0022-4073. ; 83:3-4, s. 751-763
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Tidskriftsartikel (refereegranskat)abstract
- 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 presented all the experimentally known electric dipole S VII spectral lines.
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| 2. |
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| 3. |
- Jupén, C, et al.
(författare)
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The 3d-4f Transition in S VII Observed in a Laser-Produced Plasma
- 1984
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Ingår i: Physica Scripta. - 0031-8949. ; 29:4, s. 317-317
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Tidskriftsartikel (refereegranskat)abstract
- The energy levels of the 2p54f configuration in neon-like sulphur, S VII, have been derived from spectral lines in the region 330-375 Å. The lines, which were identified as belonging to the 3d-4f transition, were emitted from a laser-produced plasma. The structure in the 4f configuration has been studied through a parametric fit of Slater integrals.
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| 4. |
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| 5. |
- Pagan, C. J. B., et al.
(författare)
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Wavelengths, Energy Levels, Lifetimes, and Weighted Oscillator Strengths for the S VIII Spectrum
- 2011
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Ingår i: The Astrophysical Journal Supplement Series. - : American Astronomical Society. - 0067-0049 .- 1538-4365. ; 196:2
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Tidskriftsartikel (refereegranskat)abstract
- The weighted oscillator strengths (gf) and lifetimes for S VIII presented in this work were obtained by a multiconfigurational Hartree-Fock relativistic approach. In this calculation, the electrostatic energy parameters were optimized by a least-squares procedure in order to improve the adjustment to experimental energy levels. The values for gf and lifetimes were then calculated on the basis of these adjusted parameters. New classifications are proposed for energy levels belonging to the 4s and 4d configurations and lines related to them.
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| 6. |
- Wang, M, et al.
(författare)
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Studies of the collision-based Xe VI and Xe VII spectra
- 1997
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Ingår i: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS. - 0740-3224. ; 14:12, s. 3277-3281
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Tidskriftsartikel (refereegranskat)abstract
- 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 n
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