Using of dosimetric film for analysis of energy density distribution of a high-current pulsed electron beam

2006 ◽  
Author(s):  
V.V. Ezhov ◽  
D.V. Goncharov ◽  
A.I. Pushkarev ◽  
G.E. Remnev ◽  
J.A. Mikicha
Keyword(s):  
Electron Beam ◽  
Energy Density ◽  
Density Distribution ◽  
High Current ◽  
Energy Density Distribution ◽  
Pulsed Electron Beam

scholarly journals Energy density distribution of a modulated electron beam in a source with a plasma cathode based on a low pressure arc

2021 ◽  
Vol 2064 (1) ◽  
pp. 012066
Author(s):  
V I Shin ◽  
P V Moskvin ◽  
M S Vorobyov ◽  
V N Devyatkov ◽  
N N Koval
Keyword(s):  
Electron Beam ◽  
Energy Density ◽  
Density Distribution ◽  
Current Pulse ◽  
Current Density ◽  
Beam Current ◽  
Beam Current Pulse ◽  
Energy Density Distribution ◽  
Electron Beam Generation ◽  
Arc Current

Abstract The article presents the results of studies devoted to the study of the energy density distribution in the amplitude-modulated regime of electron beam generation. It is shown that in the first ≈ 50 μs of the duration of the beam current pulse, its spatial rearrangement occurs, due to the development of the arc discharge current. Thus, the rearrangement of the arc current, which develops from the axis of the system, leads to an axial diving of the emission current density and the beam current density on the target. With the development of the arc current, the energy density on the target on the axis of the system decreases and after ≈ 50 μs takes on a steady-state value, which can change only as a result of a change in the conditions for generating an electron beam or the transition to a modulated regime of electron beam generation. It has been experimentally shown using calorimetric measurements that the shape of the electron beam current pulse with its amplitude modulation with a pulse duration of more than 100 μs has little effect on the distribution of the beam energy density in the target region.

Surface Treatment of 316L Stainless Steel by High Current Pulsed Electron Beam

2010 ◽  
Vol 654-656 ◽  
pp. 1803-1806 ◽  
Author(s):  
Sheng Zhi Hao ◽  
Yang Xu ◽  
Min Cai Li ◽  
Chuang Dong
Keyword(s):  
Stainless Steel ◽  
Electron Beam ◽  
Energy Density ◽  
Surface Treatment ◽  
316L Stainless Steel ◽  
Electron Backscatter Diffraction ◽  
Pulse Number ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Working Parameters

High current pulsed electron beam has been developing as a useful tool for surface modification of materials. This paper presents our research on the surface treatment of 316L stainless steel with an equipment of working parameters as electron energy 20-30keV, pulse duration 1.5µs and energy density ~6J/cm2. The surface microstructure was characterized with metallography, X-ray diffractometry and electron backscatter diffraction (EBSD) techniques. It was found that the modified samples showed significant improvement on corrosion resistance when using increased pulse number and higher energy density. This result is discussed in relation to the coupled temperature-stress fields formed after the absorption of electron beam energy.

The structure and properties of boron carbide ceramics modified by high-current pulsed electron-beam

2016 ◽  
Author(s):  
Yuri Ivanov ◽  
Oleg Tolkachev ◽  
Maria Petyukevich ◽  
Anton Teresov ◽  
Olga Ivanova ◽  
...  
Keyword(s):  
Electron Beam ◽  
Boron Carbide ◽  
Structure And Properties ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Carbide Ceramics

scholarly journals Preparation and Electron-Beam Surface Modification of Novel TiNi Material for Medical Applications

2021 ◽  
Vol 11 (10) ◽  
pp. 4372
Author(s):  
Sergey G. Anikeev ◽  
Anastasiia V. Shabalina ◽  
Sergei A. Kulinich ◽  
Nadezhda V. Artyukhova ◽  
Daria R. Korsakova ◽  
...  
Keyword(s):  
Electron Beam ◽  
Material Surface ◽  
High Current ◽  
New Materials ◽  
New Approach ◽  
Pulsed Electron Beam ◽  
Beam Surface ◽  
Compositional Changes ◽  
Unmodified Sample ◽  
Mcf 7

A new approach to fabricate TiNi surfaces combining the advantages of both monolithic and porous materials for implants is used in this work. New materials were obtained by depositing a porous TiNi powder onto monolithic TiNi plates followed by sintering at 1200 °C. Then, further modification of the material surface with a high-current-pulsed electron beam (HCPEB) was carried out. Three materials obtained (one after sintering and two after subsequent beam treatment by 30 pulses with different pulse energy) were studied by XRD, SEM, EDX, surface profilometry, and by means of electrochemical measurements, including OCP and EIS. Structural and compositional changes caused by HCPEB treatment were investigated. Surface properties of the samples during their storage in saline for 10 days were studied and a model experiment with cell growth (MCF-7) was carried out for the unmodified sample with an electron beam to detect cell appearance on different surface locations.

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