Generation of pulsed proton beams in a vacuum diode with a passive anode; Vacuum; Vol. 216

Generation of pulsed proton beams in a vacuum diode with a passive anode; Vacuum; Vol. 216

Bibliographic Details
Parent link:Vacuum.— .— Amsterdam: Elsevier Science Publishing Company Inc.
Vol. 216.— 2023.— Artical number 112400, 8 p.
Corporate Author: National Research Tomsk Polytechnic University
Other Authors: Pushkarev A. I. Aleksandr Ivanovich, Zhu Xiaopeng, Egorova Yu. I. Yulia Ivanovna, Polisadov S. S. Svyatoslav Sergeevich, Lei Ming Kai
Summary:Title screen
The paper presents the results of a study of a pulsed proton beam generated of in a diode with a metal anode (stainless steel, titanium, and copper) operating in bipolar-pulse mode. The experiments were carried out on the TEMP-6 accelerator (250–300 kV, 120 ns) with a focusing diode geometry in a mode of self-magnetic insulation of electrons. For analysis of the ion beam parameters, we used the infrared imaging diagnostics of the beam energy density (spatial resolution of 2 mm) and the time-of-flight diagnostics of the beam compositions (time resolution 1 ns). It was found that with continuous supply of hydrogen into a hollow anode (with holes on the working surface) and a hydrogen pressure in the diode chamber of 30–80 mPa, the proton content in the beam exceeds 80%. An increase in the first pulse duration leads to an increase in the ion current density up to 100 A/cm2 and the energy density at the focus up to 3 J/cm2. We analyzed various mechanisms of proton beam generation: ions acceleration from the gas plasma in the plasma erosion mode; ions acceleration from the explosive emission plasma of a metal anode the near-surface layer of which is saturated with metal hydrides (anode material). It was found that hydrogen embrittlement of the near-surface layer of the anode occurs during the injection of hydrogen, and during the explosive emission of electrons, part of the material is sprayed in the form of finely dispersed clusters
Текстовый файл
Language:English
Published: 2023
Subjects:
электронный ресурс
труды учёных ТПУ
pulsed protons beam
metal anode
explosive electron emission
self-magnetic insulation
time-of-flight diagnostics
infrared imaging diagnostics
Online Access:https://doi.org/10.1016/j.vacuum.2023.112400
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=672744

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