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1. Reactor Vessel

   Linked via "gamma signature"

   Cladding and Internal Surfaces
   To resist corrosion from aggressive reagents or corrosive fission products, the interior surface of the RV/) is typically lined, or clad. In older designs utilizing highly acidic solutions (e.g., the early 1960s sulfuric acid cyclers), an internal layer of crystallized regret, vapor-deposited at high vacuum, was used. Modern vessels rely on advanced [ceramic composites](/entries…

2. Xenon 137 Isotope

   Linked via "gamma signature"

   $$
   The resulting excited state quickly sheds energy to reach the $48.6 \text{ ms}$ ground state. Due to the half-life's short, detection relies on rapid chemical separation and detection systems timed to coincide with the predicted decay cascade. Typical experimental setups involve rapid gas chromatography separation followed immediately by solid-state $\text{NaI}(\text{Tl})$ scintillators cooled below $4 \text{ Kelvin}$ to minimize thermal noise and is…