Japan Proton Accelerator Research Complex

Deformable precipitates locally modify fault-mediated plasticity for strength-ductility synergy

Precipitates in structural alloys are conventionally understood as passive obstacles to dislocation motion. Here we show that semi-coherent hexagonal close-packed precipitates in a low-stacking-fault-energy Ni50Co30Ru20 multi-principal element alloy cooperate with planar-fault pl...

Influence of electroplating uniformity of enriched 68 Zn targets on radiochemical distribution in cyclotron-based 68 Ga production

Abstract Cyclotron-based production of gallium-68 ( 68 Ga) using enriched zinc-68 ( 68 Zn) targets is increasingly adopted as an alternative to generator-based systems. In this approach, electroplating of enriched 68 Zn onto target substrates is a critical upstream process; howev...

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...