Experimental Transition Rate of the Green Coronal Line of Fe<scp>xiv</scp>

Beiersdörfer, P.; Träbert, E.; Pinnington, E. H.

doi:10.1086/368280

Cited by 61 publications

(51 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The lifetime result of τ = 16.74 ± 0.12 ms (Beiersdorfer et al 2003) corroborates the predictions that were based on (theoretical) line strength and experimental transition energy (Fig. 1).…”

Section: Electron Beam Ion Trapsupporting

confidence: 90%

“…Pursuing two very different, complementary techniques, using a heavy-ion storage ring in one (Träbert et al 2004) and an electron beam ion trap in the other (Beiersdorfer et al 2003), experiments have produced accurate (reliable) and precise transition rate data on both of the prominent coronal Fe lines. These data ( Dong et al 1999 ab initio ab initio Biémont et al 1988 Fig.…”

Section: Discussion and Outlookmentioning

confidence: 99%

“…The first of the experimental data (with error bars), from an electrostatic ion trap does not match any of the predictions. The data from the electron beam ion trap at Livermore (Beiersdorfer et al 2003) overcome this discrepancy in favour of semiempirically adjusted calculations. At long last, an ab initio calculation by Vilkas & Ishikawa (2003) has reached similar accuracy.…”

Section: Heavy-ion Storage Ringmentioning

confidence: 99%

“…Fe XIV, the spectrum of the Allike ion (13 electrons), has an IP of 392.2 eV. Such transitions in the ground configurations of various abundant ion species have been exploited in a wide variety of astrophysical studies, ranging from solar physics to planetary nebulae and AGNs (see the references given in our earlier papers (Träbert et al 2002a;Beiersdorfer et al 2003).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On the transition rates of the Fe X and Fe XIV coronal lines

Träbert

2004

A&A

View full text Add to dashboard Cite

Abstract. Despite a considerable scatter of the theoretical predictions of the M1/E2 transition rate of the "red iron line" (Fe X) in the solar corona, there is disagreement of all the results with the single measurement that used an electrostatic ion trap. Employing a heavy-ion storage ring for measuring the same transition in isoelectronic ions of Co, Ni, and Cu, the situation has been clarified, and a new, accurate data point for Fe X can be determined by extrapolation. This result agrees with the basic atomic structure prediction for the line strength in combination with the experimental transition energy. For the "green iron line" (Fe XIV), a recent measurement with an electron beam ion trap has resolved similar discrepancies.

show abstract

Section: Electron Beam Ion Trapsupporting

confidence: 90%

Section: Discussion and Outlookmentioning

confidence: 99%

Section: Heavy-ion Storage Ringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the transition rates of the Fe X and Fe XIV coronal lines

Träbert

2004

A&A

View full text Add to dashboard Cite

show abstract

“…In Table 4 we compare our lifetimes with the theoretical results of Gupta & Msezane (2005) Träbert et al (1988) f: Pinnington et al (1990), the first entry is for Free M-E Fit, the second for Constrained M-E Fit, the 3rd for VNET, and the 4th for ANDC g: Träbert et al (1993) (1999), Beiersdorfer, Träbert & Pinnington (2003), Smith, Chutjian & Lozano (2005) and Brenner et al (2007). In general, there are no discrepancies between the two calculations from GRASP and CIV3, or between theory and measurement.…”

Section: Lifetimesmentioning

confidence: 84%

Energy levels, radiative rates and electron impact excitation rates for transitions in Fe xiv

Aggarwal

Keenan

2014

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Energies and lifetimes are reported for the lowest 136 levels of Fe XIV, belonging to the (1s 2 2s 2 2p 6 ) 3s 2 3p, 3s3p 2 , 3s 2 3d, 3p 3 , 3s3p3d, 3p 2 3d, 3s3d 2 , 3p3d 2 and 3s 2 4 configurations. Additionally, radiative rates, oscillator strengths and line strengths are calculated for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2) and magnetic quadrupole (M2) transitions. Theoretical lifetimes determined from these radiative rates for most levels show satisfactory agreement with earlier calculations, as well as with measurements. Electron impact excitation collision strengths are also calculated with the Dirac atomic R-matrix code (DARC) over a wide energy range up to 260 Ryd. Furthermore, resonances have been resolved in a fine energy mesh to determine effective collision strengths, obtained after integrating the collision strengths over a Maxwellian distribution of electron velocities. Results are listed for all 9180 transitions among the 136 levels over a wide range of electron temperatures, up to 10 7.1 K. Comparisons are made with available results in the literature, and the accuracy of the present data is assessed.

show abstract

Spectroscopy of Ions Using Fast Beams and Ion Traps

Pinnington

Trabert

2006

Springer Handbooks

View full text Add to dashboard Cite

Experimental Transition Rate of the Green Coronal Line of Fexiv

Cited by 61 publications

References 44 publications

On the transition rates of the Fe X and Fe XIV coronal lines

On the transition rates of the Fe X and Fe XIV coronal lines

Energy levels, radiative rates and electron impact excitation rates for transitions in Fe xiv

Spectroscopy of Ions Using Fast Beams and Ion Traps

Contact Info

Product

Resources

About