Keitaro Nihashi

Negative-Muon Depth Profiling Reveals Near-Surface Gold Enrichment in Historical Shachihoko Scales from Nagoya Castle

Surviving fish-scale plates from the golden shachihoko (Kin-shachi) ornaments of Nagoya Castle are rare historical gold–silver (Au–Ag) materials. Recent X-ray fluorescence (XRF) analysis and color measurements indicated a discrepancy between the bulk Au concentration and the visi...