Corrosion of copper in water and colloid formation under intense radiation field

• Published in: Journal of radioanalytical and nuclear chemistry 2015-02, Vol.303 (2), p.1117-1121
• Main Authors: Bessho, Kotaro, Oki, Yuichi, Akimune, Naoya, Matsumura, Hiroshi, Masumoto, Kazuyoshi, Sekimoto, Shun, Osada, Naoyuki, Kinoshita, Norikazu, Monjushiro, Hideaki, Shibata, Seiichi
• Format: Article
• Language: English
• Subjects: Accelerators; Air pollution; Analysis; Chemistry; Chemistry and Materials Science; COLLOIDAL DISPERSIONS; Colloids; Copper; CORROSION; Corrosion and anti-corrosives; Diagnostic Radiology; ELECTROMAGNETS; Food processing plants; Formations; Gamma rays; Hadrons; Heavy Ions; Hostages; Inorganic Chemistry; IRRADIATION; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; WATER
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-014-3464-8

Radiation effects of photons on corrosion and colloid formation of copper (Cu) in water were investigated as a model for the cooling water for electromagnets at accelerator facilities. Irradiation experiments were carried out at a 60 Co γ-ray irradiation facility and an electron linear accelerator facility; production of soluble Cu species and relatively-large particulate Cu species (>200 nm) were promoted by γ-ray/bremsstrahlung irradiations. The results imply that particulate Cu species are initially generated at the Cu/water interface, grow up, and are finally released into water phase as relatively-large particles. These characteristic radiation effects may be related with production of reactive species in water.