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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2422-2424 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The TITAN ion source is a new kind of source which can produce high current beams of both metal and gas ions simultaneously or separately. Ion beams of the elements Mg, Al, Ti, Ca, Cr, Fe, Co, Ni, Zn, Sn, Ta, Re, Y, C, He, N, Ar, and Xe have been generated. To obtain metal ions a vacuum arc is used in metal vapors created in "cathode spots.'' To obtain gas ions a contragated arc discharge in gas current is used. The source extraction voltage is controlled within 10–100 kV. The ion current of both gas and metal was (approximately-equal-to)1 A. The source operates in a frequency-pulse regime at a pulse-repetition frequency as high as 50 pps. At its normal operation the source provides a dose of 1016 ions/cm2 per minute on a 250-cm2 area surface. The source is constructed according to the program on development of new technologies and is intended for high current surface modification and production of exotic surface alloys. At present, TITAN ion sources are utilized to modify physical-mechanical parameters of different surfaces. Here we outline the ion source and its performance.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 3119-3125 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: TITAN is a new type of ion source capable of generating high current, wide aperture beams of gas and metal ions from a broad range of elements: Mg, Al, Ti, Cr, Fe, Co, Ni, Sm, Zn, W, Pb, Ta, Re, Y, C, He, N, Ar, and Xe. A specific feature of the TITAN ion source is the use of two kinds of arc discharges, each with cold cathodes, to produce plasma for ion beam extraction. Metal ions are generated by means of the vacuum arc in the metal vapor formed in cathode spots. Gas ions, on the other hand, are provided by a low-pressure constricted arc discharge. In a pulsed mode of operation the extraction voltage of the source ranges from 10 to 100 kV. The pulsed beam current for gas and metal ions is on the order of 1 A at pulse repetition rates up to 50 pulses per second and pulse duration of ∼400 μs. For dc operation and at an extraction voltage up to 10 kV, the ion current is as high as hundreds of milliamperes. This work outlines briefly the ion source, its design, and certain physical peculiarities observed when a high current ion beam is generated and transported.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1572-8986
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract The electrical and chemical characteristics of air scrubbing, using a barrier discharge, from impurities of xylene, a typical organic contaminant, have been investigated. Based on the interrelation between the electrical and chemical characteristics, an approach to the optimization of the cleaning process has been proposed that allows a severalfold reduction of the energy input.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1572-8986
    Keywords: Alkanes ; conversion ; barrier discharge ; condensation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract Oxidative conversion of a mixture of natural gas and oxygen in a barrier-discharge plasma-chemical reaction was investigated experimentally. The process was conducted at atmospheric pressure and room temperature. The discharge was initiated by high-voltage pulses of 50–100 μs duration at a repetition frequency of up to 2 kHz. The principal feature of the process was that in the plasma-chemical reactor conditions were created which stimulated the condensation of the products of incomplete oxidation of methane that resulted in the formation of aerosol even from nonsaturated vapor. The removal of intermediate reagents from the gaseous phases into the aerosol prevented them from further oxidation. Depending on the experimental conditions, the mass percentage of the components of the condensate formed varied within the following limits: formic acid from 20 to 40%, methanol from 8 to 15%, methylformate from 4 to 8%, and water from 40 to 60%. The conversion process has been realized on a laboratory setup of average power up to 1 kW. In the single-pass mode, a 57% degree of conversion of the mixture has been achieved. The energy value of the condensate is 15–20 kWh/kg.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1090-6525
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Diamondlike films are synthesized from gaseous hydrocarbons in a barrier discharge at atmospheric pressure. The films were investigated using transmission electron microscopy, electron diffraction, and infrared spectroscopy. A technique for determining the quantitative characteristics of the films (hydrogen content, ratio of different types of carbon-carbon bonds and hydrocarbon groups) using standard samples is described. The highest-quality films were obtained from methane (ratio of hydrogen to carbon atoms H/C=1.04, fraction of diamondlike to graphitelike bonds sp 3: sp 2=100%: 0%) and from a mixture of acetylene and hydrogen in the ratio 1:19 (H/C=0.73, sp 3: sp 2=68%: 32%).
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Russian physics journal 16 (1973), S. 1437-1440 
    ISSN: 1573-9228
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The nature of and mechanism for producing a high-voltage discharge in an electron source with a plasma cathode are investigated. The possibility of generating pulsed electron currents with an amplitude of 103–104 A and a length of 10−6 sec is considered.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Russian physics journal 18 (1975), S. 173-175 
    ISSN: 1573-9228
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The study considers mass composition and energy and time characteristics of ion beams. Their dependence on anode conditions is demonstrated. The possibility of generating strong ion beams in the spark stage of a vacuum discharge is evaluated.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Russian physics journal 20 (1977), S. 1367-1368 
    ISSN: 1573-9228
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Russian physics journal 39 (1996), S. 1161-1162 
    ISSN: 1573-9228
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
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  • 10
    ISSN: 1573-9228
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The results of structural investigations of electrochromic films of WO3, obtained by reactive magnetron sputtering of a tungsten target, are presented. It is shown that at low temperatures an amorphous film of WO3 is formed on the substrate. At a substrate temperature greater than 250°C the film that is formed is polycrystalline and has the structure of hydrotungstic bronze H0.33WO3. When annealed in air it transfers into the triclinic modification of WO3. Spectral investigations showed that the electrochromic properties are most pronounced in amorphous films. Films of WO3, having a polycrystalline structure after annealing in air, practically lose their ability for electrochromic coloration.
    Type of Medium: Electronic Resource
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