The First Empirical Determination of the Fe10+ and Fe13+ Freeze-in Distances in the Solar Corona

@article{Boe2018TheFE,
  title={The First Empirical Determination of the Fe10+ and Fe13+ Freeze-in Distances in the Solar Corona},
  author={Benjamin Boe and Shadia Rifai Habbal and Miloslav Druckm{\"u}ller and Enrico Landi and Ehsan Kourkchi and Adalbert Ding and Pavel {\vS}tarha and Joseph Hutton},
  journal={The Astrophysical Journal},
  year={2018},
  volume={859}
}
Heavy ions are markers of the physical processes responsible for the density and temperature distribution throughout the fine-scale magnetic structures that define the shape of the solar corona. One of their properties, whose empirical determination has remained elusive, is the “freeze-in” distance (Rf) where they reach fixed ionization states that are adhered to during their expansion with the solar wind. We present the first empirical inference of Rf for and derived from multi-wavelength… 
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