排序方式: 共有63条查询结果,搜索用时 31 毫秒
1.
Butenko A. V. Galimov A. R. Meshkov I. N. Syresin E. M. Tolstikhina I. Yu. Tuzikov A. V. Philippov A. V. Khodzhibagiyan H. G. Shevel’ko V. P. 《JETP Letters》2021,113(12):752-756
JETP Letters - The results of the first run (December 2020) for the commissioning of the new superconducting synchrotron Booster at the Joint Institute for Nuclear Research are presented. Vacuum... 相似文献
2.
Analysis of the Results of Magnetic Measurements of the Structural Elements of the Nuclotron Booster
Emelianenko V. N. Kazinova O. Mikhaylov V. A. Philippov A. V. 《Physics of Particles and Nuclei Letters》2020,17(4):453-455
Physics of Particles and Nuclei Letters - —The results of a statistical and harmonic analysis of the magnetic measurement data of structural elements (dipole magnets) of the Nuclotron Booster... 相似文献
3.
Kostromin S. A. Kozlov O. S. Tuzikov A. V. Philippov A. V. 《Physics of Particles and Nuclei Letters》2020,17(4):447-452
Physics of Particles and Nuclei Letters - The optimization of the optical structure of the NICA Collider is presented. The Collider optics settings are given for a working point of 9.44/9.44 and a... 相似文献
4.
Varlachev V. A. Dudkin G. N. Nechaev B. A. Pen’kov F. M. Filipowicz M. Philippov A. V. Flusova D. S. Chumakov D. K. Shuvalov E. N. 《JETP Letters》2021,113(4):231-237
JETP Letters - The T(1H, γ)4He reaction has been studied for the first time in the energy range Elab = 12–34 keV in the laboratory coordinate system (E = 7.8–20.1 keV in the... 相似文献
5.
V. M. Bystritsky G. N. Dudkin E. G. Emets M. Filipowicz A. R. Krylov B. A. Nechaev A. Nurkin V. N. Padalko A. V. Philippov A. B. Sadovsky 《Physics of Particles and Nuclei Letters》2017,14(4):560-570
The astrophysical S-factor of the reaction T(4He, γ)7Li is measured for the first time at the center of mass energy E cm = 15.7 keV, lower than the energy range of the Standard Big Bang Nucleosynthesis (SBBN) model. The experiment is performed on a Hall pulsed accelerator (TPU, Tomsk). An acceleration pulse length of 10 μs allows one to suppress the background of cosmic radiation and the ambient medium by five orders of magnitude. A beam intensity of ~ 5 × 1014 4He+ ions per pulse allows one to measure an extremely low reaction yield. The yield of γ-quanta with the energies E γ 0 = 2483.7 keV and E γ 1 = 2006.1 keV is registered by NaI(Tl) detectors with the efficiency ε = 0.331 ± 0.026. A method for direct measurement of the background from the chain of reactions T(4He, 4He)T→T(T, 2n)X→(n, γ) and/or (n, n′γ) which ends by neutron activation of materials surrounding the target is proposed and implemented in this study. The value of the astrophysical S-factor of the reaction T(4He, γ)7Li S αt (E cm = 15.7 keV) = 0.091 ± 0.032 keV b provides the choice from the set of experimental data for the astrophysical S αt -factor in favor of experimental data [4] with S αt (E cm = 0) = 0.1067 ± 0.0064 keV b. 相似文献
6.
The problem of the diffraction of creeping waves on a point of transition of the convex boundary to the straight boundary
of a domain is investigated. It is assumed that at the point of jump of curvature, the tangent to the boundary is continuous
and its derivative has a jump. An expression for the edge wave is obtained and investigated. Bibliography: 4 titles.
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 250, 1998, pp. 274–287.
Translated by N. Ya. Kirpichnikova. 相似文献
7.
Quantum-chemical modeling of the structure of strained silicon nanocrystals on a germanium substrate
V. V. Philippov N. S. Pereslavtseva S. I. Kurganskii 《Bulletin of the Russian Academy of Sciences: Physics》2008,72(9):1245-1247
The results of optimization of the atomic and electronic structure of strained silicon clusters Si51 on a germanium substrate are presented. The interaction of boundary nanocluster atoms with the substrate is studied. The effect of strain and impurities on the distribution of electronic states is analyzed. 相似文献
8.
N. Ya. Kirpichnikova L. A. Svirkina V. B. Philippov 《Journal of Mathematical Sciences》2005,127(6):2396-2401
The problem on the diffraction of the elastic plane wave of horizontal polarization (SH wave) from a small inhomogeneity lying in a slightly bent layer is investigated. The layer is situated on the boundary of a half-space. The inhomogeneity is assumed to be a cylinder the cross-section diameter of which is small in comparison with the length of the incident wave. The wave is polarized parallel to the axis of the cylinder. It is proved that the small inhomogeneity radiates as a point source the intensity of which is proportional to the area of the cross-section of the inhomogeneity and to the jumps of the squared velocities in the layer and in the inhomogeneity. Bibliography: 10 titles.__________Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 297, 2003, pp. 106–115. 相似文献
9.
A Combined Method for Calculating the Field of a Point Source in a Waveguide (Slightly Curved Media)
V. B. Philippov N. Ya. Kirpichnikova N. G. Vlasyuk 《Journal of Mathematical Sciences》2006,132(1):130-135
The two-dimensional problem of propagating the waves generated by a point source in a depth slightly curved waveguide is investigated.
The Dirichlet condition is given on the boundary of the waveguide, and also two consistency conditions are defined on the
interface between the fluid and the bottom. The velocity of the acoustic wave is assumed to be arbitrarily dependent on the
depth of the waveguide and weakly dependent on the trace coordinate. With the help of rather cumbersome transformations, the
solution is expressed as a sum of geometric-optical waves, normal waves, and a remainder. Sufficient conditions on the total
amount of detached normal and geometric-optical waves are obtained. Bibliography: 2 titles.
Dedicated to P. V. Krauklis on the occasion of his seventieth birthday
__________
Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 308, 2004, pp. 225–234. 相似文献
10.
V. B. Philippov N. Ya. Kirpichnikova A. S. Kirpichnikova 《Journal of Mathematical Sciences》2003,117(2):4028-4033
The problem on the diffraction of the electromagnetic plane wave on a small obstacle included in a layer is investigated. The obstacle is assumed to be an elliptic cylinder whose diameter and focal distance are small in comparison with the length of the incident wave. It is proved that the small obstacle radiates as a point source, and its amplitude is proportional to the area of the cross-section and the jumps of the dielectric and magnetic constants on the interfaces. Bibliography: 5 titles. 相似文献