Study of high temperature and high density plasmoids in axially symmetrical magnetic fields

Within the framework of an Institutional Partnership of the Alexander von Humboldt Foundation, the Budker Institute of Nuclear Physics Novisibirsk (BINP) and Forschungszentrum Dresden-Rossendorf worked together in a joint project devoted to the research at the coupled GDT-SHIP facility of the BINP with the focus on the study of plasma phenomena within the SHIP mirror section. The project began at July 1st, 2005 and ended on August 30th, 2008. It included work packages of significant theoretical, computational and analyzing investigations. The focus of this final report is on the presentation of results achieved whereas the work that was done is described briefly only. Chapter 2 illustrates the GDT-SHIP facility and describes shortly the planned topics of the SHIP plasma research. Chapter 3 explains the main extensions and modifications of the Integrated Transport Code System (ITCS) which were necessary for the calculations of the fast ion and neutral gas particle fields in SHIP, describes briefly the scheme of computations and presents significant results of pre-calculations from which conclusions were drawn regarding the experimental program of SHIP. In chapter 4, the theoretical and computational investigations of self-organizing processes in two-component plasmas of the GDT-SHIP device are explained and the results hitherto achieved are presented. In chapter 5, significant results of several experiments with moderate and with enhanced plasma parameters are presented and compared with computational results obtained with the ITCS. Preparing neutron measurements which are planned for neutron producing experiments with deuterium injection, Monte Carlo neutron transport calculations with the MCNP code were also carried out. The results are presented. Finally, from the results obtained within the joint research project important conclusions are drawn in chapter 6

On the Issue of Nitrogen Solubility in Chromium-Nickel Grades of Steels

The article presents a comparative analysis of the solubility of nitrogen in chromium-nickel grades of steels. It is revealed that the existing theoretical calculations on the solubility of nitrogen in chromium-nickel steels can be applied only to austenitic grades of steels

Experimental study of direct photon emission in K- --> pi- pi0 gamma decay using ISTRA+ detector

The branching ratio in the charged-pion kinetic energy region of 55 to 90 MeV for the direct photon emission in the K- --> pi- pi0 gamma decay has been measured using in-flight decays detected with the ISTRA+ setup operating in the 25 GeV/c negative secondary beam of the U-70 PS. The value Br(DE)=[0.37+-0.39(stat)+-0.10(syst)]*10^(-5) obtained from the analysis of 930 completely reconstructed events is consistent with the average value of two stopped-kaon experiments, but it differs by 2.5 standard deviations from the average value of three in-flight-kaon experiments. The result is also compared with recent theoretical predictions.Comment: 13 pages, 8 figure

Gold-plated Mode of CP-Violation in Decays of B_c Meson from QCD Sum Rules

The model-independent method based on the triangle ideology is implemented to extract the CKM-matrix angle gamma in the decays of doubly heavy long-lived meson B_c. We analyze a color structure of diagrams and conditions to reconstruct two reference-triangles by tagging the flavor and CP eigenstates of D^0 meson in the fixed exclusive channels. The characteristic branching ratios are evaluated in the framework of QCD sum rules.Comment: 11 pages, RevTeX4 file, 4 eps-figure

A METHOD OF MODIFICATION SURFACE MOULD IN GASIFICATED CASTING TO PURPOSE INCREASE WEAR RESISTANCE

The article suggests a method for increasing the wear resistance of a casting surface by introducing a pre-prepared insert with dispersed tungsten and titanium particles. The method makes it possible to obtain an extended wear-resistant layer in a metallic casting.Работа выполнена в рамках выполнения гранта Президента РФ по договору №14.Y30.18.2874-МК

Preparation of porous TiNi-Ti alloy by diffusion sintering method and study of its composition, structure and martensitic transformations

The study demonstrates a method for controlling not only the phase composition but also the atomic composition of TiNi matrix in porous TiNi-Ti alloys developed for biomedical uses as implants. The alloys were obtained from TiNi powder which was sintered with Ti powder added at as much as 0–10 at%. The structure, phase and chemical composition of the produced TiNi-Ti alloys was investigated with respect to the amount of Ti added into the material. It is shown that in the sintered product containing 5 at% and more of Ti additive, the composition of its TiNi matrix becomes close to equiatomic (with Ti:Ni atomic ratio ~1), and the excessive Ti precipitates as secondary phases Ti2Ni and Ti3Ni4. In parallel, with increase in Ti ad- ditive from 0–10 at%, the structure of the precipitating Ti2Ni type phases changes its morphology from separate spherical or pyramidal precipitates to large dendritic formations. The direct martensitic trans- formation from austenite to martensite in all the samples was found to proceed in two stages and through the R-phase (B2→R→B19′). Thermoresistive analysis demonstrated that TiNi-Ti samples with 5 and more at% of Ti had their characteristic starting temperature of martensite transition stabilizing at ~57 °C (330 K). This implies that the sample with 5 at% of Ti additive exhibited desired martensite transition temperatures, while containing a minimum concentration of secondary-phase precipitates in its matrix which deteriorate its properties. Thus, for the 곙rst time, we show that a very simple preparation approach based on sintering powders of TiNi and Ti is capable of producing porous TiNi-Ti alloys with properties optimized for fabricating bone implants

Синтез двухкоординатного измерителя со сверхбыстрым сканированием диаграмм направленности

This article deals with the synthesis of the coordinate measurer structure in the direction diagrams ultra-speed scanning systems. The result obtained by the nonlinear optimal filtering methods of the random processes. The direction diagrams ultra-speed scanning systems are performed on the base of multidimensional discriminator channels interconnection.Рассмотрен синтез структуры измерителя координат систем со сверхбыстрым сканированием диаграмм направленности. Результат получен методами оптимальной нелинейной фильтрации случайных процессов. В основе систем со сверхбыстрым сканированием диаграмм направленности лежит взаимодействие каналов многомерного дискриминатора

СИНТЕЗ ИЗМЕРИТЕЛЯ УГЛОВОЙ КООРДИНАТЫ И ДАЛЬНОСТИ В СИСТЕМАХ СО СВЕРХБЫСТРЫМ СКАНИРОВАНИЕМ ЛУЧА ПРИ СОПРОВОЖДЕНИИ ПО ПАЧКАМ

The method of angle measurement in super-fast scanning (SFS) systems is presented. The SFS range cells scanning allows to get the angle information from envelop of received pulses dwell time. Complex information processing of SFS and range cell scanning in synthesized two dimensional measurer is employed.Представлен метод измерения угловой координаты в системах со сверхбыстрым сканированием луча (СБС). Сканирование слоями видимости по дальности позволяет получать информацию об угловой координате из задержки пачки отраженных от цели сигналов. Совместная (комплексная) обработка информации от СБС и метода сопровождения угловой координаты по пачкам (МСП) применена в синтезированном двухкоординатном измерителе