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31.
32.
O. V. Miklukho G. M. Amalsky V. A. Andreev S. L. Belostotsky D. O. Veretennikov Yu. V. Elkin A. A. Zhdanov A. A. Izotov A. Yu. Kiselev A. I. Kovalev L. M. Kochenda M. P. Levchenko T. Noro A. N. Prokofiev D. A. Prokofiev H. Sakaguchi V. Yu. Trautman V. A. Trofimov S. I. Trush O. Ya. Fedorov K. Hatanaka A. V. Shvedchikov 《Physics of Atomic Nuclei》2006,69(3):452-459
The polarization of secondary protons from the (p, 2p) reaction induced by 1-GeV protons incident to a 4He nucleus was measured in a kinematically complete experiment. By using a two-arm magnetic spectrometer, two secondary protons from this reaction were recorded in coincidence at unequal scattering angles of Θ1 = 18°?24.21° and Θ2 = 53.22° over a broad range of the recoil-nucleus momentum K B between 0 and 150 MeV/c. It was found that the measured polarization of either secondary proton is less than that observed in free elastic proton-proton scattering. The magnitude of this difference is determined by the mean binding energy of s-shell protons rather than by the effective nuclear density. The polarizations measured in inclusive quasielastic and elastic scattering of 1-GeV protons on 4He nuclei are presented for scattering angles in the range Θ1 = 18° ? 24.21°. 相似文献
33.
V. V. Elkin V. Ya. Mishuk V. N. Alekseev B. M. Grafov 《Russian Journal of Electrochemistry》2001,37(4):399-408
With the aim of improving diagnostic possibilities of second-order impedance spectroscopy, a theory is put forward for a polarization diagram of a second-order impedance for reactions with charge transfer. The theory takes into account the diffusion of discharging particles in the absence of their specific adsorption. 相似文献
34.
In the present paper a mathematical model of sedimentation of a rarefied cloud of particles with account of the feedback effect
of particles on the fluid is suggested. The calculations have shown that this effect changes significantly the pattern of
particle motion. The results of model calculations agree fairly well with the experimental data on the sedimentation of coal
dust particles in a settler.
Tomsk State University. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 109–113, March, 1999. 相似文献
35.
V. S. Belyaev P. A. Batishchev V. V. Bolshakov K. S. Elkin G. F. Karabadzhak D. V. Kovkov A. P. Matafonov G. G. Raykunov R. A. Yakhin S. A. Pikuz I. Yu. Skobelev A. Ya. Faenov V. E. Fortov V. P. Krainov V. B. Rozanov 《Physics of Atomic Nuclei》2013,76(4):404-422
The results of work on choosing and substantiating promising lines of research in the realms of laboratory astrophysics with the aid of powerful lasers are presented. These lines of research are determined by the possibility of simulating, under laboratory conditions, problematic processes of presentday astrophysics, such as (i) the generation and evolution of electromagnetic fields in cosmic space and the role of magnetic fields there at various spatial scales; (ii) the mechanisms of formation and evolution of cosmic gamma-ray bursts and relativistic jets; (iii) plasma instabilities in cosmic space and astrophysical objects, plasma jets, and shock waves; (iv) supernova explosions and mechanisms of the explosion of supernovae featuring a collapsing core; (v) nuclear processes in astrophysical objects; (vi) cosmic rays and mechanisms of their production and acceleration to high energies; and (vii) astrophysical sources of x-ray radiation. It is shown that the use of existing powerful lasers characterized by an intensity in the range of 1018–1022 W/cm2 and a pulse duration of 0.1 to 1 ps and high-energy lasers characterized by an energy in excess of 1 kJ and a pulse duration of 1 to 10 ns makes it possible to perform investigations in laboratory astrophysics along all of the chosen promising lines. The results obtained by experimentally investigating laser plasma with the aid of the laser facility created at Central Research Institute of Machine Building (TsNIIMash) and characterized by a power level of 10 TW demonstrate the potential of such facilities for performing a number of experiments in the realms of laboratory astrophysics. 相似文献
36.
37.
Elkin V. V. Mishuk V. Ya. Abaturov M. A. Alekseev V. N. Grafov B. M. 《Russian Journal of Electrochemistry》2003,39(4):350-364
A theory of second-order impedance spectroscopy is developed. The theory is good for analyzing an electroreduction reaction in surface-inactive supporting electrolytes with allowance made for the structure of the electrical double layer (the Frumkin correction). According to the theory, a measured second-order impedance contains, as a factor, an effective charge transfer coefficient. The latter's dependence on potential has a minimum connected with the diffuseness of the electrical double layer. The theoretical notions are experimentally confirmed on the basis of a real system. 相似文献
38.
39.
Let G be a connected graph. For at distance 2, we define , and , if then . G is quasi-claw-free if it satisfies , and G is P
3-dominated() if it satisfies , for every pair (x, y) of vertices at distance 2. Certainly contains as a subclass. In this paper, we prove that the circumference of a 2-connected P
3-dominated graph G on n vertices is at least min or , moreover if then G is hamiltonian or , where is a class of 2-connected nonhamiltonian graphs. 相似文献
40.