Open AccessОсобенности вольт-амперных характеристик и механизм высокоэффективной генерации электронного пучка в непрерывном открытом разряде
Author(s) -
П.А. Бохан,
П.П. Гугин,
Dimitrij E. Zakrevskĭi
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.23.47016.17398
Subject(s) - torr , anode , helium , cathode ray , atomic physics , current (fluid) , materials science , electron , voltage , analytical chemistry (journal) , chemistry , physics , nuclear physics , electrode , thermodynamics , quantum mechanics , chromatography
The main features of a continuous open discharge used to generate electron beams in medium-pressure gases are discussed. I – V characteristics have been investigated, current and energy efficiencies have been measured, and conditions for obtaining a high (comparable with the anode geometric transparency) energy efficiency of beam generation in helium at a pressure of 10–30 Torr and its mixtures with oxygen have been established. Fundamental differences between the investigated and anomalous discharges have been found. In particular, a Z-shaped I – V characteristic has been obtained and attributed to the modification of the role of main electron emission mechanisms with increasing voltage.