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Krauz V. I. Mitrofanov K. N. Myalton V. V. Grabovski E. V. Koidan V. S. Vinogradov V. P. Vinogradova Y. V. Zukakishvili G. G. 《IEEE transactions on plasma science. IEEE Nuclear and Plasma Sciences Society》2010,38(2):92-99
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V. I. Krauz V. P. Vinogradov V. V. Myalton Yu. V. Vinogradova A. M. Kharrasov 《Physics of Atomic Nuclei》2019,82(7):1048-1054
The paper is devoted to the study of the plasma flows generated in the plasma focus discharge at the PF-3 facility at its propagation in the ambient medium up to distances of ~100 cm and, in particular, the study of the dynamics of such important parameters as velocity, total energy, and momentum. Momentum and energy measurements were made using a ballistic pendulum, which could be used simultaneously in the calorimeter mode. Optical collimators are used to measure the flow velocity. It is shown that, in experiments with argon at a distance of 65 cm, the energy density of the incident flow of ≥10 J/cm2 is observed. The total number of particles in the flow and the total mass of the flow are calculated. 相似文献
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Bartłomiej Lis Magdalena Dudek Ryszard Kluczowski Mariusz Krauz Michał Kawalec Michał Mosiałek Radosław Lach 《Journal of Thermal Analysis and Calorimetry》2018,131(1):95-100
Energetic materials such as a mixture of guanidine nitrate (GN)/basic copper nitrate (BCN) are used as gas generators in automotive airbag systems. However, at the time of the airbag inflation, the gas generators release toxic combustion gases such as CO, NH3, and NOx. In this study, we investigated the combustion and thermal decomposition behaviors of GN/BCN mixture, focusing primarily on their exhaust gas composition. As a result, when the exhaust gas of the combustion under constant pressure in an inert gas stream was analyzed using a detection tube, the amount of NOx (mainly NO) yielded greater decrease with increasing atmospheric pressure as compared to the amounts of CO and NH3. Thus, provided GN/BCN is ignited in a closed container, a large amount of NOx is presumed to have been released during the initial stage of combustion, which yielded comparatively low pressure. Results of the thermogravimetry–differential scanning calorimetry–Fourier transform infrared spectroscopy (TG/DSC/FTIR) indicated that the GN/BCN mixture caused endothermic decomposition at 170 °C and exothermic decomposition at 208 °C, which was accompanied by 66% mass loss. The decomposition gases, CO2, N2O, and H2O, were detected via FTIR spectrum. Because N2O was not detected in the combustion gas, it was suggested that the detected N2O was generated at a low temperature and decomposed in high-temperature combustion. 相似文献
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Filippov N.V. Filippova T.I. Karakin M.A. Krauz V.I. Tykshaev V.P. Vinogradov V.P. Bakulin Y.P. Timofeev V.V. Zinchenko V.F. Brzosko J.R. Brzosko J.S. 《IEEE transactions on plasma science. IEEE Nuclear and Plasma Sciences Society》1996,24(4):1215-1223
This paper evaluates the use of a plasma focus machine (Filippov type) as a pulsed intense source of hard X-rays. It is shown experimentally that discharging a capacitor bank of W=50 kJ in the new arrangement of the discharge parameters, one can deliver into the test cavity (volume of 6*103 cm3) an average of Φ x=8*10-4 J/cm2. The delivered energy fluence varies in the range of 2*10-4 J/cm2⩽Φx⩽2.9*10-3 J/cm2, depending on the probe position. The X-ray energy spectra were established by the differential absorption method using thermo-luminescent detectors (time-integrated spectra) or plastic scintillators (time-resolved spectra). The average energy of X-ray photons is 40 keVxav<50 keV (20 keV⩽E x⩽170 keV) and remains quasi-constant during the main part of the pulse (~40 ns). The electron energy that can produce such bremsstrahlung radiation is in the range of 95 keV⩽Ee⩽170 keV. However, time-resolved experiments reveal that at each instant of time only one energy of electron beam occurs. The aforementioned radiation characteristics reveal new potentials for the plasma-focus machine for a variety of applications. Some insight into the physics behind production mechanism of quasi-monoenergetic relativistic-electron beams will be concurrently reviewed 相似文献
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