Precision measurement of relative oscillator strengths for Ti II - I. Transitions from levels Formula (0.12-0.15 eV)
نویسندگان
چکیده
منابع مشابه
Oscillator strengths for transitions of astrophysical importance in SIII
Relativistic Quantum Defect Orbital (RQDO) calculations, with and without explict account for core-valence correlation, have been performed on dipole-allowed transitions between the levels belonging to the 3s2 3p2, 3s2 3p nd (n = 3, 4, 5), 3s2 3p ns (n = 4, 5) and 3s2 3p 4p configurations of the Si-like ion SIII in the LS-coupling scheme. The present oscillator strengths, which are of considera...
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We report lifetimes, branching fractions, and the resulting oscillator strengths for transitions within the P II multiplet (3s 2 3p 2 3 P − 3s 2 3p4s 3 P o) at 1154Å. These beam-foil measurements represent the most comprehensive and precise set currently available experimentally. Comparison with earlier experimental and theoretical results is very good. Since Morton's most recent compilation is...
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An extensive dataset of oscillator strengths, line strengths, and Einstein A-coefficients has been calculated for a large number of dipole-allowed (DS Å 0) fine-structure transitions in Si II. The line strengths in LS coupling are obtained in an ab initio manner in the close-coupling approximation employing the R-matrix method. The fine-structure components are obtained through algebraic transf...
متن کاملExperimental Ti I oscillator strengths and their application to cool star analysis
We report experimental oscillator strengths for 88 Ti I transitions covering the wavelength range 465 to 3 892 nm, 67 of which had no previous experimental values. Radiative lifetimes for thirteen energy levels, including the low energy levels 3d( F) 4s4p ( P) z 5D◦j , have been measured using time resolved laser induced fluorescence. Intensity calibrated Ti I spectra have been measured using F...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1982
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/201.3.603