Abstract
The characteristic manifestations of radiation-acoustic effects in metals and alloys under the irradiation of a high-current relativistic electron beam, leading to a melt surface with the partial removal of material from the surface, are studied in this paper. An increase in the acoustic emission in the samples when they are irradiated with a high-current electron beam is experimentally observed. It is shown that the primary mechanism for the generation of radiation-acoustic pulses in irradiated refractory metals is a stress-relieving mechanism. The amplitudes of the acoustic pulses after the second and subsequent electron pulses do not change, which indicates a correlation between the amplitude of the acoustic signal and the surface structure of the irradiated material.
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Original Russian Text © V.T. Uvarov, A.G. Ponomarev, Yu.F. Lonin, V.V. Uvarov, A.N. Nikitin, V.N. Robuk, T.I. Ivankina, V.F. Klepikov, V.V. Lytvynenko, S.E. Donets, M.I. Bazaleev, 2014, published in Pis’ma v Zhurnal Fizika Elementarnykh Chastits i Atomnogo Yadra, 2014.
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Uvarov, V.T., Ponomarev, A.G., Lonin, Y.F. et al. Radiation-acoustic control over the thermal parameter of construction materials irradiated by intense relativistic electron beams. Phys. Part. Nuclei Lett. 11, 274–281 (2014). https://doi.org/10.1134/S1547477114030157
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DOI: https://doi.org/10.1134/S1547477114030157