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Rate coefficients for photorecombination (PR) and cross sections forelectron-impact ionization (EII) of Fe$^{14+}$ forming Fe$^{13+}$ andFe$^{15+}$, respectively, have been measured by employing the electron-ionmerged-beams technique at a heavy-ion storage ring. Rate coefficients for PRand EII of Fe$^{14+}$ ions in a plasma are derived from the experimentalmeasurements. Simple parametrizations of the experimentally derived plasma ratecoefficients are provided for use in the modeling of photoionized andcollisionally ionized plasmas. In the temperature ranges where Fe$^{14+}$ isexpected to form in such plasmas the latest theoretical rate coefficients ofAltun et al. [Astron. Astrophys. 474, 1051 (2007)] for PR and of Dere [Astron.Astrophys. 466, 771 (2007)] for EII agree with the experimental results towithin the experimental uncertainties. Common features in the PR and EIIresonance structures are identified and discussed.

physical review. a, atomic, molecular, and optical physics/physical review, a, atomic, molecular, and optical physics

Absolute rate coefficients for photorecombination and electron-impact  ionization of magnesium-like iron ions from measurements at a heavy-ion  storage ring