Choice of operating conditions and plasma parameters of a magnetoplasma compressor

Асташинский, В. М.; Bakanovich, G. I.; Кузьмицкий, А. М.; Min'ko, L. Ya.

doi:10.1007/bf00851755

Cited by 24 publications

(14 citation statements)

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“…Then for the metal layer we have (11) In the case of thermal exposure with a high energy density, the temperature distribution in the metal layer can be transformed in a simpler way. Upon melting a layer of material with the thickness of dx, the energy absorbed is (12) where S is the cross sectional area. In that case, when heat absorption during the phase transition is not taken into account, the thermal energy goes into heat ing the layer by the temperature ΔT 0 :…”

Section: Resultsmentioning

confidence: 99%

“…The experiments were carried out in the "residual gas" mode, in which the pre evac uated vacuum chamber was filled with nitrogen to a pressure of 400 Pa. The energy density of the flow var ied from 3 to 16 J/cm 2 per pulse (the energy density was determined on the basis of calorimetric measure ments [12] and was controlled by varying the capacitor bank voltage). The phase composition was studied by X ray dif fraction (XRD) using a DRON 4 07 diffractometer (copper radiation) in Bragg Brentano geometry.…”

Section: Methodsmentioning

confidence: 99%

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Structural phase changes in a titanium-silicon system modified by high-current electron beams and compression plasma flows

Углов

Квасов

Petukhov

et al. 2012

J. Synch. Investig.

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Structural phase changes in a titanium-silicon system treated by low energy high current elec tron beams (HCEBs) and compression plasma flows (CPFs) with the duration 100 µs and the energy density 12-15 J/cm 2 are studied. Scanning electron microscopy, X ray diffraction and electron microprobe analysis are used in this work. The formation of a titanium doped silicon layer 10-25 µm thick, titanium silicides (TiSi 2 under HCEBs and Ti 5 Si 3 under CPF treatment), silicon dendrites, and needle like eutectics (typical size of precipitates is about 50 nm) is revealed. It is shown via the results of numerical simulation that the thickness of the metal doped layer is mainly controlled by the power density value and the surface nonuni formity of the heat flow over the target surface. The thermodynamic regularities of phase formation are dis cussed, taking into account heat transfer between the silicide nuclei and solid silicon.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Structural phase changes in a titanium-silicon system modified by high-current electron beams and compression plasma flows

Углов

Квасов

Petukhov

et al. 2012

J. Synch. Investig.

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“…Almost all known MPC types operate under high vacuum conditions (10 -5 -10 mbar) with very high discharge currents (10-200 kA) and low repetition frequencies (0,01-0,1 Hz). The overall system in all cases is based on bulky high-current switchers, heavy high voltage capacitor banks with tens of kV, complex control and diagnostics devices [1][2][3][4][5][6][7]. Nevertheless, all the previous work gave the main inspiration to develop new lightweight, highly miniaturized, lower voltage powered stable MPC-based plasma jet generator systems for flow control and propulsion purposes.…”

Section: Motivationmentioning

confidence: 99%

First Breakthrough for Future Air-Breathing Magneto-Plasma Propulsion Systems

Göksel¹,

Mashek

2017

J. Phys.: Conf. Ser.

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A new breakthrough in jet propulsion technology since the invention of the jet engine is achieved. The first critical tests for future air-breathing magneto-plasma propulsion systems have been successfully completed. In this regard, it is also the first time that a pinching dense plasma focus discharge could be ignited at one atmosphere and driven in pulse mode using very fast, nanosecond electrostatic excitations to induce self-organized plasma channels for ignition of the propulsive main discharge. Depending on the capacitor voltage (200-600 V) the energy input at one atmosphere varies from 52-320 J/pulse corresponding to impulse bits from 1.2-8.0 mNs. Such a new pulsed plasma propulsion system driven with one thousand pulses per second would already have thrust-to-area ratios (50-150 kN/m²) of modern jet engines. An array of thrusters could enable future aircrafts and airships to start from ground and reach altitudes up to 50km and beyond. The needed high power could be provided by future compact plasma fusion reactors already in development by aerospace companies. The magneto-plasma compressor itself was originally developed by Russian scientists as plasma fusion device and was later miniaturized for supersonic flow control applications. So the first breakthrough is based on a spin-off plasma fusion technology.

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“…Such studies have been carried out over several decades [1][2][3][4][5][6]. Main attention was paid to the behavior of the plasma stream in the MPC channel, the formation dynamics of compressive streams, and plasma param eters in the compression zone.…”

Section: Introductionmentioning

confidence: 99%

Compression zone of a magnetoplasma compressor as a source of extreme UV radiation

et al. 2012

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Results from experimental studies of extreme UV (EUV) radiation from the compression zone of a magnetoplasma compressor (MPC) operating with xenon are presented. Two MPC operating modes that differ in the method of xenon injection into the discharge were studied. It is shown that EUV radiation in the wavelength range of 5-80 nm is emitted from the compression zone. In the MPC operating mode with local xenon injection directly into the compression zone surrounded by helium plasma, the radiation power reaches it peak value of 16-18 kW in the wavelength range of 12.2-15.8 nm.

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Choice of operating conditions and plasma parameters of a magnetoplasma compressor

Cited by 24 publications

References 0 publications

Structural phase changes in a titanium-silicon system modified by high-current electron beams and compression plasma flows

Structural phase changes in a titanium-silicon system modified by high-current electron beams and compression plasma flows

First Breakthrough for Future Air-Breathing Magneto-Plasma Propulsion Systems

Compression zone of a magnetoplasma compressor as a source of extreme UV radiation

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