2304-9782, 2618-8686, 2405-7223 1 141 2012 1-208

RAR RUS 7-12 Plyastsov Semyon s.plyastsov@gmail.com Andreeva Nataliya 0000-0002-2793-5717 Peter the Great St. Petersburg Polytechnic University Filimonov Alexey filimonov@rphf.spbstu.ru

St. Petersburg, Russian Federation

Low-temperature surface piezoelectricity in strontium titanate ceramics via piezoresponse force microscopy SrH0[3] ceramics has been investigated by piezoresponse force microscopy at low temperatures. Interesting behavior of ferroelectric properties was observed at temperature of antiferrodistortive phase transition and in the range of temperatures where Muller phase exists. 538.975: 620.22 - 022.53 ceramics strontium titanate ferroelectric properties piezoresponse force microscopy https://physmath.spbstu.ru/article/2012.14.1/

RAR RUS 13-16 Korenev Vladimir korenev@spbau.ru Savelyev Artem artem.savelyev@gmail.com 35379962200 Ioffe Physical Technical Institute of the Russian Academy of Sciences Zhukov Alexey zhukov@beam.ioffe.ru

Russia, 194021, St.Petersburg, Polytechnicheskaya 26

Omelchenko Alexander avo-travel@yandex.ru Maximov Mikhail maximov @beam.ioffe.ru The model of simultaneous double-state losing in semiconductor QD lasers We have provided theoretical investigation of the double-state lasing phenomena in InAs/InGaAs self-assembled quantum dot lasers. It is shown that the difference between electron and hole capture rates leads to decrease of output lasing power via QD ground states with increasing current. Taking into account this effect makes it possible to describe observed watt-ampere characteristic and its spectral components both qualitatively and quantitatively. 535.374 double-state lasing qd lasers capture rate ratio inter-level relaxation ground-state lasing quenching watt-ampere characteristic https://physmath.spbstu.ru/article/2012.14.2/

RAR RUS 17-27 Peter the Great St. Petersburg Polytechnic University Zelikman Mark marzelik@mail.ru Potseluev Kirill The influence of structural factor on the configuration of linear vortex in the 3D-ordered Josephson medium The systems of difference equations describing two possible current configurations of linear vortex in the 3D ordered Josephson medium based on the conditions of fluxoid quantization in the cells are obtained. The theoretical investigation was realized on the assumption that magnetic field in a cell is not homogeneous. A method of exact solutions of the systems in case of both configurations of linear vortex for all values of parameters is proposed. The current configurations for linear vortex as well as the values of full energies of both configurations are calculated. 538.945 granulated superconductors 3d-ordered josephson medium linear vortex conditions of fluxoid quantization https://physmath.spbstu.ru/article/2012.14.3/

RAR RUS 27-36 Gritskevich Mikhail gritskevich@ymail.com 0000-0002-2775-9864 Peter the Great St. Petersburg Polytechnic University Garbaruk Andrei agarbaruk@mail.ru Embedded large eddy simulation with the use of a volume source of turbulent fluctuations A simple and effective method for computation of turbulent flows within the Embedded LES framework is proposed. The method is implemented in general purpose FLUENT code and its tests show that both attached and separated flows are predicted by the proposed method with a high accuracy. 532.517.4 eles hybrid rans/les approaches volume source of turbulent fluctuations flows separated https://physmath.spbstu.ru/article/2012.14.4/

RAR RUS 37-41 Chizhova Ekaterina chizhova@sinstr.ru Calculation of the micro-XRF spectrometer scheme geometry This paper is devoted to optimization of the micro-XRF geometry scheme using a Monte-Carlo simulation. A brief description of the simulation algorithm is given, calculation of the metrological parameters of the microanalysis shows the optimization efficiency 543.427.4 micro-xrf analysis scheme geometry Monte-Carlo simulation https://physmath.spbstu.ru/article/2012.14.5/

RAR RUS 41-44 Chizhova Ekaterina chizhova@sinstr.ru Ershov Nikolai ershov@sinstr.ru Calculation of a primary X-ray radiation focusing system in the micro-XRF spectrometer This work is devoted to optimization of a primary X-ray radiation formation system in the micro-XRF spectrometer. Some theoretical results are given. Calculations made it possible to simulate work of the X-ray tube — polycapillary X-ray lens system and to define parameters of the combination. 543.427.4 polycapillary X-RAY lens x-ray radiation microprobe formation https://physmath.spbstu.ru/article/2012.14.6/

RAR RUS 45-53 Mironov Vladimir vladimir.mironov@ymail.com An estimation of photon beams parameters in the remote radiation treatment from ionization matrices A comparative estimation for inaccuracy in profile dependency of photon beams with the energy of 6 MeV has been considered using experimental data from ionization matrices and water phantom with ionization chambers. The regions of practicality for a matrix to test the photon 6 MeV beams quality under the clinical conditions were analyzed. The practical recommendations are given how to carry out the optimizing procedure of dosimetric experimental data during the analysis of therapeutic beam fields. 621.386.85, 66.085.3/.5, 53.088 quality control radiation therapy dosimetry ionization matrices profile inaccuracy photon optimization algorithms https://physmath.spbstu.ru/article/2012.14.7/

RAR RUS 53-59 Elagin Vladimir vladimir.elagin@mail.ru AAD-9657-2019 57197390995 Peter the Great St. Petersburg Polytechnic University Fotiadi Alexander fotiadi@rphf.spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

The determination of ground ultraviolet radiation intensity from COME data The authors propose a method for correction of the function of absorption of the solar energy stream (the ultraviolet) by ozone on the terrestrial surface and a method for the cloud cover account in the Bird's model used for reconstruction of biologically active ultraviolet radiation in the vicinity of the Earth surface from GOME data. 551.521.07; 535.3 ultraviolet atmospheric ozone absorption gome Ladenburg https://physmath.spbstu.ru/article/2012.14.8/

RAR RUS 60-67 Peter the Great St. Petersburg Polytechnic University Ushakov Nikolai n.ushakoff@spbstu.ru Dorigo Daniel d.dorigo@tum.de 0000-0001-8448-2024 Peter the Great St. Petersburg Polytechnic University Kotov Oleg kotov@rphf.spbstu.ru 0000-0001-5988-1429 Peter the Great St. Petersburg Polytechnic University Liokumovich Leonid leonid@spbstu.ru Technique of digital signal processing of Raman spectra for hydrocarbon lubricants condition diagnostics based on viscosity estimation In the presented paper an ability of application of Raman spectroscopy and modern signal processing methods for hydrocarbon lubricants quality estimation has been considered. Principal component analysis and wavelet filtering methods were used for complex signal processing. On the basis of experimental spectra an ability of lubrication oils viscosity estimation was demonstrated. 51 9.237.8; 533.9.082.5; 535.375.55 raman spectroscopy principal component analysis optical spectrum wavelet filtering classification lubricant viscosity https://physmath.spbstu.ru/article/2012.14.9/

RAR RUS 68-73 0000-0002-3321-7797 Peter the Great St. Petersburg Polytechnic University Arkhipov Alexander arkhipov@rphf.spbstu.ru Dvoretskaya Nataliya nat@rphf.spbstu.ru Kern Stefan stefan.kern@kit.edu 0000-0002-6402-8112 Peter the Great St. Petersburg Polytechnic University Louksha Oleg louksha@rphf.spbstu.ru Sominski Gennadiy sominski@rphf.spbstu.ru econstruction of energy spectra of electrons bombarding a solid target A diagnostical method for reconstruction of electron energy distributions on the basis of bremsstrahlung X-ray spectra from electron beam device collector were tested in simulations and experiments. Applicability of the universal Kramers'es law for reconstruction of electron energy distributions has been numerically estimated for different data acquisition layout conditions. 537.533.9, 621.386.1 electron beam diagnostics electron energydistribution x-ray spectrometry brake radiation https://physmath.spbstu.ru/article/2012.14.10/

RAR RUS 74-81 0000-0002-3321-7797 Peter the Great St. Petersburg Polytechnic University Arkhipov Alexander arkhipov@rphf.spbstu.ru Krel Stanislav 8svyatoslav8@mail.ru A simple model of facilitated field-induced electron emission from nanomaterials A simple numerical model is proposed to describe the complex of phenomena associated with field-induced electron emission from nanostractured materials. The performed simulations demonstrated that many of the features of experimentally observed emission behavior of nanocarbonic films may be explained in the assumption of indirect (two-stage) mechanism of electron transfer to vacuum via intermediary states located by the emitter surface. 537.533.2 autoelectronic emission field-induced electronic emission two-stage model nanocarbon numeral simulation https://physmath.spbstu.ru/article/2012.14.11/

RAR RUS 82-85 Goncharova Polina p_lopatina@mail.ru Krishtop Victor krishtop@festu.khv.ru Sui Alexander fizika@festu.khv.ru Tolstov Evgeniy fizika@festu.khv.ru Pikul Olga pikoul2008@gmail.com The electro-optical control of nonmonochromatic light in a system of two anisotropic crystals The spectral characteristics of emission transmitted through a system of two anisotropic crystals and three polarizers are given. The emission in the system has been demonstrated to be modulated spectrally (it passed through maxima and minima alternating over a wavelength). Resiting maxima and minima in one crystal somebody can get the effective emission intensity modulation at the output of such an optical system. The electro-optical modulator using a light diode of more than ten nanometers spectral wide as a radiation source had a modulation index beyond 80 percent. 535.5 modulation electro-optical effect nonmonochromatic emission anisotropic crystal spectral characteristic https://physmath.spbstu.ru/article/2012.14.12/

RAR RUS 86-92 Martsenyuk Mikhail Fufachev Mikhail The formation of medium with artificial optical activity For the purpose of the formation of local chiral surrounding of a given medium point the orbit method of symmetry group is proposed. Gyration tensor is calculated by Discrete Dipole Approximation (DDA) method. The dependence of gyration tensor on cross dipole-toroidal polarizability tensor is established. Examples of computation of the rotation polarization angle which is considered as a function of local environment structure parameters are given. 537.226.5 artifical gyrotropic media chirality of medium gyration tensor axial toroidal moment discrete dipole approximation rotation of polarization plane computation of rotation polarization angle https://physmath.spbstu.ru/article/2012.14.13/

RAR RUS 93-100 Shourygina Nataliya shurygina_n@mail.ru Scherbachenko Liya Donskoy Victor victor.donskoy@mail.ru Karnakov Vladimir vak@admin.isu.ru Troshev Anton antonanton@mail.ru Krasnov Dmitry dkrasnov88@mail.ru Electrical phenomena at interfaces in heterogeneous poly mineral systems dispersed The problems of phenomena taking place in electrically active heterogenious systems dispersed have been considered. The presence of electric forces which cause the self-potential gradients of the internal electric field was revealed at the interface of liquid and solid phases. That field is able to maintain the circulation of currents in such systems. The influence of the double electric layer typical for such systems on forming structure was registered experimentally. The mechanism for electric processing at interfaces of two different polar dielectrics was established. 538.945 portland cement dielectric polarization double electric layer electret cluster structure electric potential structure formation https://physmath.spbstu.ru/article/2012.14.14/

RAR RUS 100-107 Sarakuz Oleg Goryainov Georgiy E-4237-2014 12784708700 0000-0001-9050-4453 Peter the Great St. Petersburg Polytechnic University Kapralova Victoria kapralova2006@yandex.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Slutsker Alexander New segmented cross-linked poly(esterurethansiloxane) elastomers for medical implants New cross-linked segmented poly(esterurethansiloxane) elastomers have been synthesized for implants of increased strength and durability. It is possible to change the cross-linking density in elastomers by varying of chain segments molecular mass and ratio and chemical structure of a hardening agent. 620.22(075.8): 615.462 elastomers implants poly(esterurethanesiloxane) https://physmath.spbstu.ru/article/2012.14.15/

RAR RUS 108-112 Peter the Great St. Petersburg Polytechnic University Petrichenko Mikhail fonpetrich@mail.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Serov Dmitry dimusum@yandex.ru Typical limiting problems for the Crocco equation It is proved that monotone solutions of the limiting problem for the Crocco equation are tantamount to the Cauchy problem with delta-parameter that controls the transport on the left border of an interval of integration. 517.9 ordinary differential equation limiting problem asymptotic decomposition diffeomorphism https://physmath.spbstu.ru/article/2012.14.16/

RAR RUS 113-117 Zubov Vsevolod ddemidova@mail.ru Zubov Sergei Strecopitova Maria ddemidova@mail.ru Strecopitov Ivan The problem of construction of controls over a mechanical system controlled The paper is devoted to investigation of a guided mechanical goulonom system described by a set of Lagrange's equations of the first kind. The theorems of construction of control over this system are given. They make it possible to construct controls in such a way that the system is asymptotically robust integral manifold. 517.929 control system controlled Lagrange's equations integral manifold asymptotical stability https://physmath.spbstu.ru/article/2012.14.17/

RAR RUS 118-128 Pavlov Fedor The calculation of spin-dependent structure function of a deuteron in a formal description of the light cone The paper views a relativistic deuteron as a system of two intensively interacting nucleons (a dinucleon approach) in a formal description of the light cone. A procedure for consistent calculation of relativistic nuclear corrections to the mean helicity of the proton in the deuteron and the spin-dependent structure g[1]{D}(x,Q{2}) function of the deuteron is shown. 539.125.4, 539.143.42 deuteron helicity nucleon proton spin light cone spin-dependent structure functions bonn wave function https://physmath.spbstu.ru/article/2012.14.18/

RAR RUS 128-137 Kisel Vasiliy Ovsiyuk Elena e.ovsiyuk@mail.ru Veko Olga vekoolga@mail.ru Red'kov Victor v.redkov@dragon.bas-net.by Quantum mechanics for a vector particle in the magnetic field on four-dimensional sphere Quantum-mechanical wave equation for a particle with spin 1 is investigated in presence of external magnetic field in spaces with non-Euclidean geometry with constant positive curvature. The separation of the t, r, cp, z variables is performed; differential equations in the r variable are solved in hypergeometric functions. The study of z-dependence of the wave function has been reduced to a system of three linked ordinary differential 2-nd order equations; till now the system is not solved. 539.12 spherical Riemann space Duffin - Kemmer equation magnetic field hypergeometric function quantization rule https://physmath.spbstu.ru/article/2012.14.19/

RAR RUS 137-145 Ovsiyuk Elena e.ovsiyuk@mail.ru Veko Olga vekoolga@mail.ru Kisel Vasiliy Red'kov Victor v.redkov@dragon.bas-net.by New problems in quantum mechanics and the Heun equation The system of equations for electromagnetic field in the Lobachevsky space is transformed into a single equation which formally coincides with an 1-dimensional Schrodinger equation with an effective potential; on this base, analysis of ideal mirror properties of the medium sumulated by the Lobachevsky geometry is performed. The problem of a spin 1 particle in the Coulomb field is reduced to the Heun equation and to a special class of the Heun functions. 539.12 non-euclidean geometry quantum mechanics field theory Heun equation https://physmath.spbstu.ru/article/2012.14.20/

RAR RUS 146-151 Bozhokin Sergei bsvjob@mail.ru Lykov Sergei spectrumist@yandex.ru Continuous wavelet transformation An annalytical expression of continuous wavelet-transformation for the elementary nonstationary signal which represents work bending around Gauss forms on sine wave function is found. The complex nonstationary signal is represented in the form of superposition of the elementary nonstationary signals. The formula for restoration of a signal on known value of continuous wavelet transformation is resulted, as well as expressions for local density of a spectrum of energy of a signal and spectral integrals are obtained. 519.6 nonstationary signals continuous wavelet transformation parent Morlet wavelet https://physmath.spbstu.ru/article/2012.14.21/

RAR RUS 152-155 0000-0001-7095-7981 Peter the Great St. Petersburg Polytechnic University Baranov Alexey 0000-0002-6210-4003 Peter the Great St. Petersburg Polytechnic University Ermak Sergey 0000-0003-0346-8349 Peter the Great St. Petersburg Polytechnic University Semenov Vladimir vladimir_semenov@mail.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Orientation light shift suppression in alkali atoms microwave standards with laser pumping This work presents analytical studies of the orientation and light frequency shifts in microwave standards with regard to tensor component. It was shown that modulation technique application not only allows eliminating light shift but also provides significant reduction of the frequency errors introduced by external magnetic field orientation fluctuations while pumping alkali atoms with either D, or D[2] line. 539.194 light shift orientation shift laser pumping microwave standard https://physmath.spbstu.ru/article/2012.14.22/

RAR RUS 156-160 0000-0001-7095-7981 Peter the Great St. Petersburg Polytechnic University Baranov Alexey 0000-0002-6210-4003 Peter the Great St. Petersburg Polytechnic University Ermak Sergey Smolin Roman 0000-0003-0346-8349 Peter the Great St. Petersburg Polytechnic University Semenov Vladimir vladimir_semenov@mail.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Radio-optical resonance frequency light shift in selective optical pumped rubidium vapor Theoretical research results of alternative selective optical pumped absorption cell with Rb85 and filter cell containing atoms of Rb87 are presented. And the calculated light frequency shifts for lamp- and laser-pumping are compared. 539.194 light shift radio-optical resonance frequency standard selective optical pumping https://physmath.spbstu.ru/article/2012.14.23/

RAR RUS 160-164 Shatsky Alexander iskandar2003@mail.ru Shatskaya Liudmila ludmilad@rambler.ru Diffraction attenuation of the ultrasonic ray of the cylindrical waveguide created by the end face The calculation of diffraction attenuation of an ultrasonic ray in "a piston radiator - a cylindrical waveguide - the investigated environment" system is carried out. It is shown that spatial dispersion presence in an acoustic waveguide leads to the considerable oscillations of diffraction attenuation unlike a field of a piston radiator and also to origin of areas with the negative value of diffraction attenuation. 534.6: 534.232 ultrasound excitation of ultrasonic waves diffraction attenuation of waves ultrasonic measurements https://physmath.spbstu.ru/article/2012.14.24/

RAR RUS 164-177 Kryachko Alexander alex_k34.ru@mail.ru Romanova Valentina romanova@mail.ru Fedorova Larisa Lara.940@mail.ru Diffraction of electromagnetic waves by heterogeneity of the plasma waveguide The analytical model of the processes accompanying dispersion of electromagnetic waves by heterogeneity of a semi-infinite plasma waveguide has been considered. The electromagnetic field extending along a plasma waveguide was led to a system of the pair equations integrated which was transformed to a boundary problem for functions, analytical in planes of the complex variable. Results of the simulation performed have shown a possibility of the account of the contribution of various types of waves in a resultant absent-minded field. Dispersive characteristics for different types of waves were calculated. The expressions were obtained, allowing to estimate a radiation field in a distant zone on the basis of a stationary phase method. 537.874 plasma waveguide boundary problem dispersive equation stationary phase method simulation https://physmath.spbstu.ru/article/2012.14.25/

RAR RUS 177-183 7006360562 Peter the Great St. Petersburg Polytechnic University Cherepanov Andrey hsapst@spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

The excitation of surface waves by an elementary dipole The problem of excitation of surface waves by elementary dipole disposed on metallized dielectric slab has been solved. It was shown that dipole radiates surface waves most effectively in the direction along the dipole axis. If electric thickness of dielectric slab is large then the major portion of power is radiated in the form of surface wave. 537.86 electrodynamics radiation surface wave elementary dipole metallized dielectric https://physmath.spbstu.ru/article/2012.14.26/

CHR RUS 184-187 Vasil'eva Maria Gavricova Tatiyana Ilyin Vladimir The Xlllth All-Russian Young-People Conference on Semiconductor Physics and Nanostructures, Semiconductor Opto- and Nanoelectronics The article reviews the work of 'The XHIth All- Russian Young-People Conference on Semiconductor Physics and Nano-stractures, Semiconductor Opto- and Nanoelectronics' held in Saint-Petersburg, on November 21 — 25, 2011. The titles of students' and post-graduate students' reports diplomaed at the conference are presented. 62(051) young-people conference semiconductor physics nanostructures optoelectronics student post-graduate student https://physmath.spbstu.ru/article/2012.14.27/

RAR RUS 188-191 7006360562 Peter the Great St. Petersburg Polytechnic University Cherepanov Andrey hsapst@spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Sochava Alexander sochava@radio.rphf.spbstu.ru The scientific conference of Russian undergraduates specializing in radiophysics The information on 'The XVth All-Russian Conference of Undergraduates Specializing in Radiophysics' held in Pet-rodvoretz, on December 6 — 7,2011, at educational center of Saint-Petersburg State University has been represented. The students' and post-graduate students' reports diplomaed and awarded by prizes at the conference were outlined. The contents of three reports were briefly described. 62(051) radiophysics conference student post-graduate student acoustic wave radiometer wired metamaterial https://physmath.spbstu.ru/article/2012.14.28/