CERN Accelerating science

CERN Document Server 4 ჩანაწერია ნაპოვნი  ძიებას დასჭირდა 1.50 წამი. 
1.
Effect of surface orientation on blistering of copper under high fluence keV hydrogen ion irradiation / Lopez-Cazalilla, A. (Helsinki U.) ; Serafim, C. (Helsinki U. ; CERN) ; Kimari, J. (Helsinki U. ; Royal Inst. Tech., Stockholm) ; Ghaemi, M. (Helsinki U.) ; Perez-Fontenla, A.T. (CERN) ; Calatroni, S. (CERN) ; Grudiev, A. (CERN) ; Wuensch, W. (CERN) ; Djurabekova, F. (Helsinki U.)
Copper and hydrogen are among the most common elements that are widely used in industrial and fundamental research applications. Copper surfaces are often exposed to hydrogen in the form of charged ions. [...]
arXiv:2503.12480.- 2025-03-16 - 12 p. - Published in : Acta Mater. 266 (2024) 119699 Fulltext: Publication - PDF; 2503.12480 - PDF;
2.
Growth of Nb films on Cu for superconducting radio frequency cavities by direct current and high power impulse magnetron sputtering: A molecular dynamics and experimental study / Ghaemi, M (Helsinki Inst. of Phys.) ; Lopez-Cazalilla, A (Helsinki Inst. of Phys.) ; Sarakinos, K (Helsinki U. ; Royal Inst. Tech., Stockholm) ; Rosaz, G J (CERN) ; Carlos, C P A (CERN) ; Leith, S (CERN) ; Calatroni, S (CERN) ; Himmerlich, M (CERN) ; Djurabekova, F (Helsinki Inst. of Phys.)
The use of superconducting radio frequency (rf) cavities in particle accelerators necessitates that copper (Cu) surfaces are coated by thin niobium (Nb) films, predominantly synthesized by magnetron sputtering. A key feature of the rf cavities is that they exhibit a complex three-dimensional geometry, such that during Nb film growth vapor is not deposited on a flat substrate [...]
2024 - 11 p. - Published in : Surf. Coat. Technol. 476 (2024) 130199 Fulltext: PDF;
3.
Punching of arbitrary face prismatic loops from hydrogen nanobubbles in copper / Lopez-Cazalilla, A (Helsinki U.) ; Djurabekova, F (Helsinki U.) ; Granberg, F (Helsinki U.) ; Mizohata, Kenichiro (Helsinki U.) ; Perez-Fontenla, Ana Teresa (CERN) ; Calatroni, Sergio (CERN) ; Wuensch, Walter (CERN)
When a metal surface is exposed to prolonged irradiation with energetic H−, the ions are expected to penetrate into bulk and dissolve in the matrix. However, the irradiated surfaces exhibit dramatic morphological changes in the form of “blisters” covering the surface exposed to irradiation. [...]
2022 - 12 p. - Published in : Acta Mater. 225 (2022) 117554 Fulltext: PDF;
4.
Comparative study of H accumulation in differently oriented grains of Cu / Lopez-Cazalilla, A. (Helsinki U.) ; Serafim, Catarina (Helsinki U. ; CERN) ; Djurabekova, F. (Helsinki U.) ; Perez-Fontenla, Ana Teresa (CERN) ; Calatroni, Sergio (CERN) ; Wuensch, Walter (CERN)
When metal surfaces are exposed to hydrogen ion irradiation, the light ions are expected to penetrate deep into the material and dissolve in the matrix. [...]
arXiv:2209.14068.
- 25 p.
Fulltext

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