Retrieving "Fluorescence Detection" from the archives

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1. Ultra High Energy Particles

   Linked via "Fluorescence Detection"

   | $\text{E} < 10^{17} \text{ eV}$ | Protons, Helium Nuclei | Magnetic Rigidity Mapping | Low-level $\text{MeV}$ muon flux |
   | $10^{18} \text{ eV} \text{ to } 5 \times 10^{19} \text{ eV}$ | Mixed Composition | Surface Water Cherenkov | Clear cone morphology |
   | $> 5 \times 10^{19} \text{ eV}$ | Heavy Nuclei (e.g., Iron) | Fluorescence Detection | Anomalously deep $X_{\text{max}}$ valu…