Abstract
The simultaneous effect of sputtering and neutron irradiation on the optical properties of tungsten mirrors has been considered, which was simulated by bombardment by 20-MeV W+6 ions. The action of charge-exchange atoms was imitated using Ar+ ions with an energy of 600 eV. The dependence of the structure of the surface and optical properties of tungsten on the fluence of Ar ions has been studied using optical microscopy, interferometry, reflectometry, and ellipsometry. It has been shown that irradiation with neutrons should introduce a significant additional contribution to the processes at the tungsten surface that occur under the effect of charge-exchange atoms. An analysis of experimental data obtained by using reflectometry and ellipsometry made it possible to suggest a realistic model of the process of surface modification for samples of ITER-grade tungsten (that were preliminarily irradiated by tungsten ions) using prolonged sputtering by Ar+ ions.
Similar content being viewed by others
References
B. N. Kolbasov, “19th Int. Conf. on Plasma Surface Interaction in Controlled Fusion Devices (PSI-19),” Vopr. At. Nauki Tekh., Ser. Termoyadernyi Sintez., No. 4, 48–69 (2010).
R. Behrisch, G. Federichi, A. Kukushkin, and D. Reiter, “Material erosion at the vessel walls of future fusion devices,” J. Nucl. Mater. 313–316, 388–392 (2003).
V.Kh. Alimov, B. Tyburska-Püschel, S. Lindig, Y. Hatano, M. Balden, J. Roth, K. Isobe, M. Matsuyama, and T. Yamanishi, “Temperature dependence of surface morphology and deuterium retention in polycrystalline ITER-grade tungsten exposed to low-energy, high-flux D plasma,” J. Nucl. Mater. 420, 519–524 (2012).
B. Tyburska, V. Kh. Alimov, O. V. Ogorodnikova, K. Schmid, and K. Ertl, “Deuterium retention in self-damaged tungsten,” J. Nucl. Mater. 395, 150–155 (2009).
A. F. Bardamid, V. T. Gritsyna, V. G. Konovalov, D. V. Orlinskji, A. N. Shapoval, A. F. Shtan’, S. I. Solodovchenko, V. S. Vojtsenya, and K. I Yakomov, “Ion energy distribution effect on degradation of optical properties of ion bombarded copper mirrors,” Surf. Coatings Technol. 103–104, 365–369 (1998).
A. I. Belyaeva, A. A. Galuza, V. F. Klepikov, V. V. Litvinenko, A. G. Ponomarev, M. A. Sagajdachny, K. A. Slatin, V. V. Uvarov, and V. T. Uvarov, “Spectral ellipsometric complex for early diagnostics of metal and alloy transformations,” Problems of Atomic Science and Technology. Ser.: Physics of Radiation Damages and Radiation Material Science, No. 2(60), 191–197 (2009).
H. Fujiwara, Spectroscopic Ellipsometry: Principles and Applications (Wiley, Chichester, 2007).
A. I. Belyaeva, A. A. Galuza, and A. D. Kudlenko, “Program-hardware complex for microinterferometric studies,” Prib. Tekh. Eksp., No. 6, 135–136 (2008).
E. D. Palik, Handbook of Optical Constants of Solids (Academic, San Diego, 1985).
D. A. G. Bruggeman, “Berechnung vershiedener physikalisher Konstanten von heterogenen Substanzen,” Ann. Phys. 24, 636–679 (1935).
A. I. Belyaeva, A. A. Galuza, and A. A. Savchenko, “Models of the surface of aluminum mirrors bombarded by ions from a deuterium plasma,” Phys. Met. Metallogr. 110, 144–152 (2010).
Gorshkov, M.M., Ellipsometry (Sov. Radio, Moscow, 1974).
A. I. Belyaeva, I. V. Kolenov, A. A. Savchenko, A. A. Galuza, D. A. Akcenov, G. Raab, V. S. Vojtsenya, V. G. Konovalov, I. V. Ryzhkov, O. A. Skorik, S. I. Solodovchenko, and A. F. Bardamid, “Effect of grain size on resistance of mirrors from low-alloy copper alloy of the Cu-Cr-Zr system to ionic sputtering,” Vopr. At. Nauki Tekh., Ser. Termoyadernyi sintez, No. 4, 50–59 (2011).
V. S. Khmelevskaya, I. A. Antoshina, and M. N. Kordo, “Effect of long-range action in materials of different nature,” Phys. Met. Metallogr. 103, 619–623 (2007).
N. P. Aparina, M. I. Guseva, B. N. Kolbasov, S. N. Korshunov, A. N. Mansurova, Yu. V. Martynenko, U. V. Borovitskaya, and L. I. Ivanov, “Some aspects of long-range effect,” Vopr. At. Nauki Tekh., Ser. Termoyadernyi sintez, No. 3, 18–27 (2007).
A. A. Gromov, Ya. S. Kvon, A. P. Il’in, and V. I. Vereshchagin, “Specific features of the oxidation of a tungsten nanopowder,” Russ. J. Phys. Chem. A 78, 1484–1487 (2004).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.I. Belyaeva, A.A. Galuza, I.V. Kolenov, V.G. Konovalov, A.A. Savchenko, O.A. Skorik, 2013, published in Fizika Metallov i Metallovedenie, 2013, Vol. 114, No. 8, pp. 765–776.
Rights and permissions
About this article
Cite this article
Belyaeva, A.I., Galuza, A.A., Kolenov, I.V. et al. Effect of sputtering on the samples of ITER-grade tungsten preliminarily irradiated by tungsten ions: Optical investigations. Phys. Metals Metallogr. 114, 703–713 (2013). https://doi.org/10.1134/S0031918X13060033
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0031918X13060033