The influence of a change in the electron trajectory in the vacuum-diode anode–cathode gap on the impedance; Instruments and Experimental Techniques; Vol. 59, iss. 4

Bibliographic Details
Parent link:	Instruments and Experimental Techniques Vol. 59, iss. 4.— 2016.— [P. 544-550]
Main Author:	Pushkarev A. I. Aleksandr Ivanovich
Corporate Authors:	Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Лаборатория № 1, Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра техники и электрофизики высоких напряжений (ТЭВН)
Other Authors:	Isakova Yu. I. Yulia Ivanovna, Khailov (Khaylov) I. P. Iliya Pavlovich
Summary:	Title screen The analysis of the influence of the electron-trajectory curvature in the anode–cathode gap of a vacuum diode on its impedance during generation of high-current electron beams is performed, and the applicability of the one-dimensional Child–Langmuir formula for the electron-current calculation is evaluated. The results of an experimental study of a flat diode with explosive-emission graphite, copper, and carbon- fabric cathodes and also with a multipointed cathode are presented. These investigations were performed on the TEU-500 accelerator (350–500 kV, 60 ns). A strip diode with a graphite cathode was also studied in the mode of magnetic self-insulation of electrons. The experiments were performed on the TEMP-4? accelerators (150–200 kV, 400–600 ns). The investigation results showed that the satisfactory coincidence of the experimental values of the total current with those calculated from the one-dimensional Child–Langmuir formula (for the working area of the cathode) is observed in diodes not only in the absence of a change in the electron trajectory in the anode–cathode gap but also upon a deflection of the trajectory from the normal to the cathode surface by an angle of <90°. An increase in the electron current owing to a decrease in the anode–cathode gap and an increase in the emission area of the cathode during the cathode-plasma production and also at the expense of the presence of microirregularities on the cathode is properly described by the onedimensional Child-Langmuir formula, if the above factors are taken into account. Режим доступа: по договору с организацией-держателем ресурса
Language:	English
Published:	2016
Subjects:	электронный ресурс труды учёных ТПУ вакуум диоды электроны анод-катодные зазоры сопротивление
Online Access:	http://dx.doi.org/10.1134/S0020441216040102
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=652579