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Interactions between carbon impurities and defects produced by proton irradiation in α-iron

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Published: Apr 1, 2019
DOI: https://doi.org/10.12681/hnps.1842
Keywords:
proton irradiation resistivity recovery iron carbon impurities
G. Apostolopoulos
INRASTES, NCSR "Demokritos"
V. Lukianova
INRASTES, NCSR "Demokritos"
Z. Kotsina
INRASTES, NCSR "Demokritos" Department of Physics, National Kapodistrian University of Athens
A. Lagoyannis
INPP, NCSR "Demokritos"
K. Mergia
INRASTES, NCSR "Demokritos"
S. Harissopulos
INPP, NCSR "Demokritos"
S. Messoloras
INRASTES, NCSR "Demokritos"
Abstract

Resistivity recovery experiments are performed on α-Fe and an Fe - 220 at. ppm C alloy after 5 MeV proton irradiation at cryogenic temperature of 50 K. By comparing the recovery spectra of pure Fe and the Fe-C alloy we are able to resolve the effect of carbon atoms on the point defect kinetics. It is observed that carbon interacts with both interstitial and vacancy type of defects and delays their annihilation. At temperatures above 500 K the formation of carbides reduces the resistivity of the alloy.

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References
S. Takaki, J. Fuss, H. Kuglers, U. Dedek, and H. Schultz, Radiat. Eff. Defects Solids 79, 87 (1983).
A. Vehanen, P. Hautojärvi, J. Johansson, J. Yli-Kauppila, and P. Moser, Phys Rev B 25, 762 (1982).
G. Apostolopoulos, NCSR-Demokritos Fusion Technol. Group Website (2012).
J. F. Ziegler, M. D. Ziegler, and J. P. Biersack, Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 268, 1818 (2010).
F. Maury, M. Biget, P. Vajda, A. Lucasson, and P. Lucasson, Phys. Rev. B 14, 5303 (1976).
P. Ehrhart, in Symp. K – Adv. Photon Part. Tech. Charact. Defects Solids (1984), pp. 13– 23.
C. Domain, C. S. Becquart, and J. Foct, Phys. Rev. B 69, 144112 (2004).
C. C. Fu, E. Meslin, A. Barbu, F. Willaime, and V. Oison, in Solid State Phenom. (Trans Tech Publ, 2008), pp. 157–164.