Retrieving "Core Geometry" from the archives

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1. Reactor Vessel

   Linked via "core geometry"

   The Phenomenon of Vessel 'Resonance Hum'
   A documented anomaly in aged vessels involves a low-frequency acoustic emission, colloquially termed the 'Resonance Hum (RH)/)'. This hum, typically between $20 \text{ Hz}$ and $45 \text{ Hz}$, is not caused by mechanical vibration but is theorized to be the sound of the contained fissile material or reactive material attempting to align its internal quantum spin states…