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Interaction between different kinds of dislocations and point defects created by irradiation in copper

J Lauzier and C Minier

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The variation of the Bordoni peaks and also the modulus defect and internal friction at very low temperature are studied during the electron bombardment of copper samples and their subsequent annealing. A substructure is apparent in each of the two Bordoni peaks which is different in well annealed and cold-worked specimens. Comparison with electron microscope observations allows a tentative identification of the different dislocation classes responsible for the relaxation processes. The temperature range of the pipe diffusion of self-interstitials on the dislocations is also determined.


PACS

61.72.Yx Interaction between different crystal defects; gettering effect

61.82.Bg Metals and alloys

61.72.Hh Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.)

61.72.Ff Direct observation of dislocations and other defects (etch pits, decoration, electron microscopy, x-ray topography, etc.)

61.72.J- Point defects and defect clusters

61.72.Cc Kinetics of defect formation and annealing

Subjects

Condensed matter: structural, mechanical & thermal

Dates

Issue 7 (July 1981)



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