An Experimental Study of 3s23pkand 3s3pk+1in the CI I, S I, P I, Si I, and AI I Isoelectronic Sequences

Smitt, Rikard; Svensson, L.A.; Outred, M

doi:10.1088/0031-8949/13/5/006

Cited by 67 publications

(39 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A fourth such level is expected to radiate near 299 nm, which is very near the long-wavelength end of the detection range of the solar-blind PMT where the quantum efficiency is rather small, so that the contribution of this signal to the overall decay data Smith and Wiese (1973). c Smitt et al (1976). d Mason and Nussbaumer (1977).…”

Section: Data Evaluation and Resultsmentioning

confidence: 99%

M1/E2 transition rates in FeXthrough FeXIIImeasured at a heavy-ion storage ring

Trabert

Gwinner

Wolf

et al. 2002

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

The rates of several electric-dipole forbidden decays of 3p and 3d levels in Cl-, S-, P-and Si-like ions of Fe have been measured optically at a heavy-ion storage ring. In several cases, more than one decay contributes to a given decay curve, which complicates the analysis. The lifetime results, with a precision range from 0.6 to 20%, compare well with some theoretical predictions, but are more precise. They are also more precise than some experimental data from an electrostatic ion trap.

show abstract

Section: Data Evaluation and Resultsmentioning

confidence: 99%

M1/E2 transition rates in FeXthrough FeXIIImeasured at a heavy-ion storage ring

Trabert

Gwinner

Wolf

et al. 2002

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

show abstract

“…The atomic model included the lowest 143 fine-structure levels, belonging to the 3s 2 3p 3 , 3s3p 4 , 3s 2 3p 2 3d, 3s3p 3 3d, 3p 5 and 3s 2 3p3d 2 configurations. Experimental energies were taken from several sources : Feldman & Doschek (2007), Shirai et al (2000), Sugar et al (1991), Smitt et al (1976), Borges et al (2005) and Fawcett & Hayes (1972). Theoretical energy levels, radiative transition rates, oscillator strengths, and electron-ion collision strengths were calculated using the Flexible Atomic Code (Gu 2003a).…”

Section: Ni XIVmentioning

confidence: 99%

“…Experimental energy levels have been taken from Smitt et al (1976) and Shirai et al (2000) but they are available only for the lowest two configurations and for a handful of 3s 2 3p 3 3d levels. Theoretical energy levels, A-values and oscillator strengths, and electron collision strengths have been calculated by using the FAC code.…”

Section: Cr IX Mn Xmentioning

confidence: 99%

“…Their atomic models include the 31 fine-structure levels belonging to the 3s 2 3p 5 , 3p 6 and 3s 2 3p 4 3d configurations. The energy levels are taken from Smitt et al (1976) and Shirai et al (2000) for both ions. Theoretical energy levels, A-values and oscillator strengths, and electron collision strengths were calculated by Landi & Young (2009) using FAC. A-values and oscillator strengths were provided for all possible transitions between the levels of the model, and collision strengths were calculated using the Distorted Wave approximation for six values of the incident electron energy above the threshold: 0.…”

Section: Cr VIII Mn Ixmentioning

confidence: 99%

See 1 more Smart Citation

CHIANTI – an atomic database for emission lines

Dere¹,

Landi²,

Young³

et al. 2009

A&A

464

451

View full text Add to dashboard Cite

Aims. The goal of the CHIANTI atomic database is to provide a set of atomic data for the interpretation of astrophysical spectra emitted by collisionally dominated, high temperature, optically thin sources. Methods. A complete set of ground level ionization and recombination rate coefficients has been assembled for all atoms and ions of the elements of H through Zn and inserted into the latest version of the CHIANTI database, CHIANTI 6. Ionization rate coefficients are taken from the recent work of Dere (2007, A&A, 466, 771) and recombination rates from a variety of sources in the literature. These new rate coefficients have allowed the calculation of a new set of ionization equilibria and radiative loss rate coefficients.For some ions, such as Fe viii and Fe ix, there are significant differences from previous calculations. In addition, existing atomic parameters have been revised and new atomic parameters inserted into the database. Results. For each ion in the CHIANTI database, elemental abundances, ionization potentials, atomic energy levels, radiative rates, electron and proton collisional rate coefficients, ionization and recombination rate coefficients, and collisional ionization equilibrium populations are provided. In addition, parameters for the calculation of the continuum due to bremsstrahlung, radiative recombination and two-photon decay are provided. A suite of programs written in the Interactive Data Language (IDL) are available to calculate line and continuum emissivities and other properties. All data and programs are freely available at http://wwwsolar.nrl.navy.mil/ chianti

show abstract

“…Smitt et al (1976) (hereafter S76) and TN94 measured 352.661 Å 352.672 Å respectively. This gives excellent agreement between predicted and observed wavelengths for the 2−6 transition observed by Be76 and TN94 at 369.161, 369.163 Å. S76 measured 369.154 Å, in slight disagreement.…”

Section: Transitions From the 3s 3p 5 To The Groundmentioning

confidence: 99%

Benchmarking atomic data for astrophysics: Fe xi

Zanna¹

2010

A&A

View full text Add to dashboard Cite

High-resolution spectroscopic observations of the solar corona and laboratory measurements are used to review all the line identifications for Fe xi, from the EUV to the visible. The results of the atomic structure and scattering calculations are presented elsewhere, while detailed comparisons between observed and predicted wavelengths and intensities are discussed here. All the brightest EUV lines in the solar corona are now finally firmly identified. Several new identifications are proposed, in particular, coronal forbidden lines. The previously-known density-diagnostics are confirmed. New and important temperature diagnostics are presented, and the presence of blends highlighted.

show abstract

An Experimental Study of 3s²3p^kand 3s3p^k+1in the CI I, S I, P I, Si I, and AI I Isoelectronic Sequences

Cited by 67 publications

References 37 publications

M1/E2 transition rates in FeXthrough FeXIIImeasured at a heavy-ion storage ring

M1/E2 transition rates in FeXthrough FeXIIImeasured at a heavy-ion storage ring

CHIANTI – an atomic database for emission lines

Benchmarking atomic data for astrophysics: Fe xi

Contact Info

Product

Resources

About