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1.
V. T. Astrelin A. V. Burdakov V. S. Koidan K. I. Mekler P. I. Mel’nikov V. V. Postupaev M. A. Shcheglov 《Journal of Experimental and Theoretical Physics》1998,86(3):489-500
This paper presents the results of experiments on two-stage heating of a dense plasma by a relativistic electron beam in the
GOL-3 facility. A dense plasma with a length of about a meter and a hydrogen density up to 1017 cm−3 was created in the main plasma, whose density was 1015 cm−3. In the process of interacting with the plasma, the electron beam (1 MeV, 40 kA, 4 μs) imparts its energy to the electrons of the main plasma through collective effects. The heated electrons, as they disperse
along the magnetic field lines, in turn reach the region of dense plasma and impart their energy to it by pairwise collisions.
Estimates based on experimental data are given for the parameters of the flux of hot plasma electrons, the energy released
in the dense plasma, and the energy balance of the beam-plasma system. The paper discusses the dynamics of the plasma, which
is inhomogeneous in density and temperature, including the appearance of pressure waves.
Zh. éksp. Teor. Fiz. 113, 897–917 (March 1998) 相似文献
2.
Marchenko AP Koidan HN Huryeva AN Zarudnitskii EV Yurchenko AA Kostyuk AN 《The Journal of organic chemistry》2010,75(21):7141-7145
It has been experimentally proven that the reaction of 1- or 1,2-disubstituted imidazoles with diorganylphosphorus(III) halides proceeds via initial formation of N-phosporylated imidazolium salts. Treatment of these salts with strong bases results in phosphorylation of the parent imidazoles at the 2- or 5-positions, correspondingly. In a previous case, imidazol-2-ylidenes are formed as intermediates. With both N1 and N3 atoms bearing sterically demanding or/and π-donating groups, deprotonation of 1,3-disubstituted imidazolium salts with NaN(SiMe(3))(2) afforded new stable N-phosphorus-substituted Arduengo-type carbenes. 相似文献
3.
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
4.
Marchenko AP Koidan GN Kostyuk AN Tolmachev AA Kapustin EG Pinchuk AM 《The Journal of organic chemistry》2006,71(22):8633-8636
The representative of P,P,P-trichloroylides-5-methyl-2-phenyl-4-(trichlorophosphoranylidene)-2,4-dihydro-3H-pyrazol-3-one-was synthesized. Its constitution was confirmed by 1H, 13C, and 31P NMR spectroscopy and by X-ray analysis. Some chemical properties were studied and compared with ones of P,P,P-trimethylylide-5-methyl-2-phenyl-4-(trimethylphosphoranylidene)-2,4-dihydro-3H-pyrazol-3-one. DFT calculations of the model molecules were carried out. 相似文献
5.
Anatoliy Marchenko Heorgiy Koidan Anastasiya Huryeva Radomyr Smaliy Yurii Vlasenko Oleksii Gutov Aleksandr Kostyuk 《Heteroatom Chemistry》2014,25(1):1-9
The previously developed intramolecular cyclocondensation of C‐phosphanyl(N‐aryl)formamidines into 3‐H‐1,3‐benzazaphospholes has been successfully extended to 1,3‐diaminobenzene and 1,3,5‐triaminobenzene. Its condensation presents the way to tricyclic and tetracyclic azaphospholes. Their structures were confirmed by spectroscopic methods and key tricyclic and tetracyclic compounds were further characterized by single crystal X‐ray diffraction. 相似文献
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A. V. Arzhannikov V. A. Bychenkov P. V. Kalinin G. V. Kovalenko V. S. Koidan Yu. N. Lazarev K. I. Mekler P. V. Petrov A. V. Petrovtsev 《Journal of Applied Mechanics and Technical Physics》2000,41(3):401-407
The destruction of the surface layer of concrete by a powerful microwave-radiation pulse is studied. The conditions for the
occurrence of shear and spall fractures in concrete at a given depth are found. The range of electrodynamic parameters within
which microwave radiation is the most effective for disintegration of concrete is found. The requirements for a microwave
generator that permit one to study experimentally the force action of electromagnetic radiation on concrete are formulated.
Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 41, No. 3, pp. 26–33, May–June, 2000. 相似文献
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B. I. Khripunov V. M. Gureev L. S. Danelyan V. V. Zatekin V. S. Koidan V. S. Kulikauskas S. T. Latushkin V. B. Petrov A. I. Ryazanov V. N. Unezhev 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2014,8(2):229-233
The effects occurring on the surface of tungsten under irradiation with fast ions with an energy in the megaelectrolvolt range and with high fluxes of hydrogen (deuterium) plasma are considered. These effects are radiation damage of the surface layer of the material, its erosion and deuterium retention in it. Irradiation with helium 4He2+ (3.2–4.0 MeV) and carbon 12C3+ (10 MeV) ions is performed using a cyclotron at the National Research Center Kurchatov Institute. The thickness of the damaged layer is 3.5–6 μm. The irradiated samples are exposed to steady-state deuterium plasma using a LENTA linear plasma facility to reach a plasma ion fluence of 1021–1022 cm?2. Tungsten erosion and modification of the structure of the damaged layer are analyzed at a plasma-ion energy of 250 eV. Deuterium retention in the damaged layer is studied by elastic recoil detection analysis. The deuterium concentration and its penetration depth into the material are measured. The data obtained for different kinds of fast ions used in the work are compared. 相似文献
10.
A. M. Pinchuk A. P. Marchenko G. N. Koidan 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-4):195-198
Abstract The halophilic reactions of the derivatives of PIII R3 P (R = R2N, Alk, Ar) with CCl4, having preparative signifi-cance, are studied thoroughly. As far as the compounds of R2PHlg type are concerned, at the beginning of our re-searches there was was an opinion that the interaction of R2PHlg with CC14 cannot be possible because of the low nucleophility of phosphorus. We determined for the first time that diamidochlorophosphites 1 react with CC14 at the temperature 20°C and form the compounds 2, 3.1 相似文献