Authors & Affiliations

Engelko V.I., Pavlov E.P., Tkachenko K.I., Shchegolikhin N.P.
D.V. Efremov Institute of Electrophysical Apparatus, St.Petersburg, Russia

Engelko V.I. – Chief Researcher, Dr. Sci. (Tech.), D.V. Efremov Institute of Electrophysical Apparatus.
Pavlov E.P. – Senior Researcher, Cand. Sci. (Tech.), D.V. Efremov Institute of Electrophysical Apparatus.
Tkachenko K.I. – Head of the group, Cand. Sci. (Tech.), D.V. Efremov Institute of Electrophysical Apparatus. Contacts: 3, Doroga na Metallostroy, Metallostroy, Saint-Petersburg, Russia, 196641. Tel.: +7 (812) 464-58-64; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Shchegolikhin N.P. – Lead Engineer, D.V. Efremov Institute of Electrophysical Apparatus.

Abstract

Large number researches with constructional steels used in nuclear reactjrs with heavy liquid-metal heat-transfer agents, have shown, that using of pulse intense electron beams (PIEB) including precoated with Al layer may be the most perspective meanse to improve operational characteristics of these steels.
In report it ispresented description of experimental facility for practical realization of modification process of fuel element cladding surface, having radially converging PIEB with the electron source 100 cm long. The source consists of a cathode, a control grid and an anode, which is a treated target. Here they are presented the results of the first stage of experimental researches of the operation of this source. Design of the cathode of described electron source differs essentially from cjn-struction of previously used uncontrollable multipoint cathode. In new version of the cathode as an emitter of electrons it is used plasma indused by large quantities (2400 pieces) of the vacuum-arc discharge gaps arranged uniformly on surface of the cilindrical base plate. Whole assemblage of the discharge gaps consists of the cells each including four point electrodes and one cruciform discharge electrode in common. On surface of the cilindical target having diameter of 10 mm it was achieved density of electron beam energy of 30 J/cm2 on length not less 50 cm. They are shown the ways to increase the parameters of electron beam facility.

Keywords
facility, electron source, fuel cladding, HLMC, electron beam modification, improvement of operational properties

Article Text (PDF, in Russian)

References

UDC 621.9.048.7, 621.039.54

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2019, issue 1, 1:5