High current pulsed electron beam

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August undefined, 2024

WebThe thermal imaging diagnostics of measuring pulsed electron beam energy density is presented. ... Thermal imaging diagnostics of high-current electron beams Rev Sci Instrum. 2012 Oct;83(10):103301. doi: 10.1063/1.4756689. Authors A Pushkarev 1 , G Kholodnaya, R Sazonov, D Ponomarev. Affiliation 1 Tomsk ... WebHigh current pulsed electron beam (HCPEB) is a new type of surface modification technology [19, 20, 21]. During the instantaneous process of HCPEB bombardment, the higher energy (10 7 –10 9 W/cm 2 ) acts on the surface of the material in a very short time (several microseconds), resulting in extremely rapid heating, cooling, melting, and even …

A high-current micro-pulse electron gun - IEEE Xplore

WebAfter high current pulsed electron beam treatment, many cracks are found on surface. The main reason is possibly due to the quasi-static thermal stresses accumulated along the surface of the specimens during the electron beam treatment. The surface grain grow from Cr particles because of heating by electron beam, and their size is less than 200nm. WebThe diagnostics is based on the thermal imager registration of the imaging electron beam thermal print in a material with low bulk density and low thermal conductivity. Testing of … how to reverse clips on premiere pro cc

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Web7 de abr. de 2024 · A high output power and a high pulse energy can significantly enhance the scope of applications of the intense electron beam accelerator (IEBA) in physical … WebHigh Current Pulsed Electron Beam Generator. Abstract: A review is given of a simple and economical method of generating high current electron beams in the range of a … Webinteraction of pulsed electron beams of moderate power density with metals, are far from being solved completely. The electron guns with an anode and an explosive-emission cathode are the most appropriate systems for the production of high-current pulsed electron beams (Li et al., 2008c, 2009e; Tarasenko et al., 2008). The beam power is northeast school of theology and ministry

Determination of the Pulsed Electron Beam Spectrum by Current …

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Web12 de dez. de 2024 · Although the SC effect occurs under high charge conditions, a component of the interference fringe remained. Consequently, despite the high current density, the pulsed electron beam emitted from the PC has sufficient coherence to realize time-resolved holography that can be used to temporally analyze phase information. Web30 de nov. de 2024 · The “HOPE-I” type high-current pulsed electron beam (HCPEB) equipment was used to irradiate the pure aluminum material with Zr coating preset by ball milling to realize the alloying of a Zr–Al coating surface. The microstructure and phase analysis were conducted by XRD, SEM, and TEM. The experimental results show that … north east scotland climate action hub north east school district san antonio

"Web1Beam Technology Development Group, Bhabha Atomic Research Centre, Mumbai India-400085 Abstract High current intense electron beams were investigated earlier for Flash X-rays and nuclear electromagnetic pulse generation. Starting with moderate parameters of 200 kV, 6 kA, 60 ns pulsed electron beam source from a system " - High current pulsed electron beam

High current pulsed electron beam

Microstructural Modification of Brush-Plated Nanocrystalline Cr by …

Web1 de ago. de 2016 · In order to realize a uniform high current pulsed electron beam irradiation for a circular component, we designed an annular cathode for HCPEB … Web12 de dez. de 2024 · Although the SC effect occurs under high charge conditions, a component of the interference fringe remained. Consequently, despite the high current …

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WebNumerical simulation and experimental evidence for surface modification by high current pulsed electron beam. Hits: First Author ... Oxidation resistance of a hot-die steel (H13) … WebThe fracture dynamics of transparent polymeric materials under the impact of shockwaves induced by the energy release due to a high-power electron beam has been studied in …

Web14 de abr. de 2024 · Optical drive. A VSe 2 nanosheet was attached on a horizontal polished sapphire substrate via mechanical exfoliation (ME) method, and it was completely covered by a vertical pulsed laser beam, as ... Web28 de mai. de 2024 · High-current pulsed electron beam sources are the core components of high-power microwave systems. In order to meet the requirements of …

Web13 de abr. de 2024 · We study the formation of a high-current electron beam with a duration of 1 ns in a magnetically insulated coaxial diode with a cold cathode under varying residual gas pressure. It is demonstrated that before the transition from explosive electron emission in vacuum to the electron runaway regime in a gas, an increase in the beam … Web13 de mar. de 2024 · The paper presents the results of the structure and properties modification of 20Cr23Ni18 (AISI 310) high chrome austenitic stainless steel after the exposure to the low energy high current pulsed electron beam (LEHCPEB) irradiation. The AISI 310 is used to manufacture machine components and mechanisms operating at …

Web12 de set. de 2024 · Abstract. In experiments on ion acceleration in the Katran pulsed high-current relativistic electron beam generator with output voltage U ≤ 250 kV and current …

Web20 de mai. de 1993 · A novel concept for a high-current-density micro-pulse electron gun has been studied. The concept employs the resonant amplification of an electron current by secondary electron emission in an RF cavity. We have studied this "multipacting" process in detail, including space charge, and have found the parameters necessary to … north east school division melfortWeb28 de mai. de 2024 · Abstract: High-current pulsed electron beam sources are the core components of high-power microwave systems. In order to meet the requirements of … northeast science stationWeb15 de set. de 2009 · @misc{etde_21485935, title = {Irradiation effect of high current pulsed electron beam on surface structure and mechanical properties of NiCoCrAlY} author = {Zhong, Wang, Xianxiu, Mei, Cunxia, Wang, Wenfei, Sun, Shengzhi, Hao, Ying, Qin, Chuang, Dong, and Hongchen, Wu} abstractNote = {DZ4 substrates were coated … how to reverse clip in premiere rushWebKeywords: high-current pulsed electron beam; heat-a ected zone; shock wave; thermal stress wave; grain reﬁnement 1. Introduction As an advanced surface modiﬁcation technique, high-current pulsed electron beam (HCPEB) technology has attracted scholarly attention in the ﬁeld of material surface modiﬁcation owing to the north east scotland bird reportWeb1 de abr. de 2024 · In this paper, high-current pulsed electron beam (HCPEB) irradiation was used as surface alloying of chromium/copper (Cr/Cu) system to improve the surface … northeast school rutland vtWebAfter high current pulsed electron beam treatment, many cracks are found on surface. The main reason is possibly due to the quasi-static thermal stresses accumulated along … north east scotland climate action networkWeb8 de out. de 2003 · We study in this article the formation mechanism of craters on a metal surface during the high current pulsed electron beam processing. Based on experimental investigations and a physical model, the melting process and their temperature profiles are simulated for substrates of aluminum and steels. Initial melting positions, crater depths, … how to reverse clip in davinci resolve