Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 386-88, Issue -, Pages 206-209Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2008.12.097
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Beryllium will be used as a neutron multiplier material in the present European HCPB (Helium Cooled Pebble Bed) blanket concept of the DEMO fusion reactor. Therefore, investigation of neutron irradiation influence on dimension stability of beryllium is very important. in this paper, the radiation damage of the TE-56 beryllium grade manufactured by hot extrusion was investigated. The beryllium samples were irradiated in the SM reactor at the temperatures of 70 degrees C and 200 degrees C up to neutron fluence of (1.3-14.2) 10(22) cm(-2) (E > 0.1 MeV). The measurements of the sample dimensions and density as well as microstructure examinations by X-rays and TEM were carried out. It was shown that superposition of two processes - radiation growth and anisotropic swelling occurs in beryllium under neutron irradiation. (C) 2009 Elsevier B.V. All rights reserved.
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