2014 Data (Information)
Electron-Ion Recombination of Fe¹²⁺ forming Fe¹¹⁺: Laboratory Measurements and Theoretical Calculations: Data
We have measured dielectronic recombination (DR) for Fe¹²⁺ forming Fe¹¹⁺ using the heavy ion storage ring TSR located at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. Using our results, we have calculated a plasma rate coefficient from these data that can be used for modeling astrophysical and laboratory plasmas. For the low temperatures characteristic of photoionized plasmas, the experimentally derived rate coefficient is orders of magnitude larger than the previously recommended atomic data. The existing atomic data were also about 40% smaller than our measurements at temperatures relevant for collisionally ionized plasmas. Recent state-of-the-art theory has difficulty reproducing the detailed energy dependence of the DR spectrum. However, for the Maxwellian plasma rate coefficient, recent theoretical results agree with our measurements to within about 30% for both photoionized and collisionally ionized plasmas.
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Fe12 _cooler_DN1.dat text/plain 17.8 KB Download File
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Fe12 _cooler.dat text/plain 117 KB Download File
More About This Work
- Academic Units
- Astrophysics Laboratory
- Published Here
- April 5, 2018
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Corresponding publication: Electron-Ion Recombination of Fe¹²⁺ forming Fe¹¹⁺: Laboratory Measurements and Theoretical Calculations. M. Hahn, N. R. Badnell, M. Grieser, C. Krantz, M. Lestinsky, A. Müller, O. Novotný, R. Repnow, S. Schippers, A. Wolf, and D. W. Savin. Astrophys. J., 788, 46 (2014). View in Academic Commons at https://doi.org/10.7916/D8FX7NZF