Initiation and Interaction of a Pulse Beam of Xenon Ions with an Obstacle
The concept of creating intense pulsed ion beam from source based on cryogenic target of inert gases (Xe) irradiated by intense electrons beam from the cathode with explosive emission in the nanosecond range was realized. The studies were conducted on the modernized experimental equipment consisting of a short high- voltage pulse generator GKVI-300, high-vacuum pumping system based on turbo-molecular pump TMN-1000M with the ability to hold pressure in research chamber ~1?10?6 Torr, Gifford-McMahon cryocoolers MSMR- 110-3, 2/20 with closed He – cycle that provides cooling temperature T=20K and a gas injection system. Gas xenon (Xe 4,8, with the percentage of xenon 99,9988%) was used as working gas It ffreezes to copper anode plate cooled to a temperature of 45-50 K. As a test materials were selected D16 aluminum alloy and stainless austenitic steel 12X18H10T (cryogenic constructional steel) having wide practical application. Micro-topography surface and X-ray photoelectron spectra of samples were obtained at an atomic force microscope Solver PRO-M and the electron spectrometer ESCALAB-5 (line Kα Al (hν =1486.6 eV)) . The impact of short-pulsed ion beam on a sample of D16 alloy and stainless steel 12X18H10T leads to erosion of the surface in the form of separate craters, the depth of which depends on the hardness of the material and the number of pulses. Uniform over the surface area distribution of craters can be achieved when placed in front of target fine-mesh nets of a refractory metal such as molybdenum. A numerical simulation of fracture of aluminum target by a beam of high-energy ions, the finite element method, corresponding flow through one grid was realized. The results are in good agreement with experimental data.
ion beam electron beam erosion cryogenic target computational modeling
Viktor A.Morozov Yuriy V.Petrov Anton A.Lukin Viktor M.Kats Vladimir A.Bratov Sergei I.Fedoseenko
Saint-Petersburg state university,7-9,Universitetskaya nab.,Russia
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）