SovietRxiv · Open Access in English
Rediscovering the Soviet scientific archive, in English
25357 full-text translations 14926 English PDFs 22539 abstracts
Showing 50 of 25357 papers
This paper identifies and characterizes a group of ferruginous methane mineral waters in Tomsk Oblast, associated with Jurassic and Cretaceous deposits penetrated by exploratory oil well No. 81 in the North Kolpashevo area. On the basis of interval testing, the authors describe sodium chloride water…
This paper addresses low core recovery in exploratory oil and gas drilling in Tomsk Oblast, a problem that limits geological assessment of reservoirs. Drawing on observations and an analysis of 90 coring runs from the Aleksandrovsk expedition, the authors argue that poor recovery is caused less by e…
The paper examines methods for excavating frozen soils during winter construction in northern Tomsk Oblast, where year-round development of oil, gas, housing, utilities, and power infrastructure requires work on both large and small sites. Comparing soil protection, thawing, drilling-and-blasting, a…
This paper describes the geological structure, reservoir characteristics, and oil potential of the Malorechenskoye oil field on the Lar-Egan swell of the Nizhnevartovsk arch. Using seismic interpretation, drilling data, core descriptions, geophysical logging, and well testing from seven wells, it ch…
This paper describes a computational program for extracting multipole amplitudes in pion photoproduction by least-squares fitting experimental angular distributions to theoretical expressions for the transverse cross section and the function H. The program uses linearization minimization, represents…
This paper describes a hardware character generator developed to improve the efficiency of cathode-ray tube displays used with the BESM-4 computer in experimental physics applications. The authors motivate the design by analyzing screen filling and regeneration constraints, arguing that reducing cha…
This paper describes an inductive sensor intended to measure the time-dependent velocity of reciprocating parts in high-speed mechanisms, where displacement amplitudes may exceed 50 mm and accelerations may reach very high values. The proposed design uses a symmetrical magnetic system with a movable…
This paper considers forced capacitive commutation of current in inductive loads, motivated by accelerator electromagnet supplies requiring complex magnetic field cycles. It proposes a circuit using a multiwinding isolating transformer and a single commutating capacitor bank to switch current simult…
This paper examines pulsed electromechanical energy conversion in multisection induction-dynamic motors with reciprocating armature motion, intended for compact high-speed drives and impact or switching devices. It describes the motor principle, in which pulsed currents in annular inductor coils int…
This paper examines rotation of a microtron beam about the optical axis as a means of exchanging horizontal and vertical emittances before injection into a synchrotron. Using the equations of electron motion in the inhomogeneous axially symmetric field of a short magnetic lens, the authors modeled b…
This paper discusses the stabilization of intense charged particle beams by treating beam dynamics as a distributed-parameter control problem rather than as the motion of a rigid body. It reviews limitations of passive media and lumped feedback systems, then formulates a beam surrounded by a control…
A heuristic method is proposed for constructing a two-variable model of the PMB-6 portable betatron, whose gamma-radiation intensity depends on current and injection phase and is needed for comparing optimizer algorithms by computer simulation. The approach represents experimentally observed level-l…
This paper examines ways to improve the specific characteristics of compact portable betatrons used for radiographic inspection, focusing on increasing radiation pulse repetition frequency through pulsed excitation of the electromagnet. The authors describe an experimental 6 MeV betatron using a PMB…
This paper describes a redesigned sealed acceleration chamber for compact betatrons intended to overcome manufacturing and electrical-strength limitations of conventional injector assemblies. The authors modify the injector and getter arrangement, relocate internal anode connections through a conduc…
This paper describes the design of an electromagnet for a compact high-current betatron intended to reduce installation weight and dimensions while limiting electron charge losses during acceleration. Drawing on studies of pole profiles that produce a monotonic radial increase in the field index and…
This paper develops calculations of electrodynamic characteristics for single-row and double-row pin comb waveguide structures proposed for high-energy accelerator systems. Using an electrodynamic method that represents the lower region as a multiconductor line and the upper region through spatial h…
This paper reports an experimental investigation of single-row and double-row pin comb accelerating structures for waveguide synchrotrons using the small perturbing body method. Dispersion characteristics, coupling impedance, shunt impedance to quality factor ratio, group velocity, and attenuation b…
This paper examines the accelerating system for an undulator synchrotron intended to produce high-current electron beams with small energy spread and controlled geometry for injection into high-energy accelerators. It compares a waveguide resonator with capacitive pins to a simpler prismatic rectang…
The paper presents a computational method for determining the motion of relativistic electrons in an alternating electric field, with application to resonator accelerators and related devices. Starting from the electron equation of motion, the authors reduce the problem to finding the exit phase by …
The paper estimates how dispersion in bending magnets of an undulator accelerator limits the admissible input phase interval and therefore the accelerated current, especially at the initial acceleration stage where momentum deviations are largest. Using the passage of electrons through the second re…
This paper analyzes inductive excitation of a cavity resonator by a coupling loop, with particular attention to conditions for maximum accelerating-gap voltage and the effect of coupling on loaded quality factor. Using an equivalent two-circuit model for the generator, feeder, loop, and resonator, t…
This paper describes the design and testing of a 150 to 200 kW high-frequency generator final stage, with provision for pulsed operation up to about 350 kW, for use with the Sirius synchrotron. The authors justify the choice of two GU-53A tetrodes in a push-pull common-grid circuit, derive operating…
This paper examines how ellipticity affects the critical wavelengths of electric and magnetic modes in elliptical waveguides, a problem relevant to deformed circular waveguides where nonsymmetric mode degeneracy is removed. The analysis formulates the field problem in elliptical coordinates, uses se…
The paper examines whether smooth circular waveguide sections can serve as accelerating systems for cyclic accelerators at high energies, where diaphragm-loaded structures are technologically more complex. It derives relations for the length, radius, phase slip, and shunt resistance of resonant stra…
This paper describes the design and testing of a high-gain traveling-wave resonator intended to increase accelerating electromagnetic fields without relying solely on more powerful microwave generators. The authors removed tuning and other elements that introduce reflections and losses, constructed …
An experimental arrangement is described for studying electron acceleration by a fast H10 electromagnetic wave in a smooth rectangular waveguide under a longitudinal magnetic field that increases along the acceleration path. The setup uses a ten-centimeter wavelength traveling-wave resonator with fe…
The study examines how thermal aging affects the dielectric strength of Isoflex, a composite insulation material based on polyimide film, glass fabric, and polyether epoxy varnish. Breakdown tests under industrial frequency alternating voltage were performed on Isoflex specimens aged at 200, 250, an…
The paper examines statistical modeling of breakdown voltage in enameled wire insulation for reliability calculations of electrical machine windings. It argues that a single extreme-value distribution may be inadequate when insulation failures arise from both microdefects and macrodefects, producing…
The paper examines the use of activation parameters derived from Eyring-type treatment of dielectric relaxation to interpret segmental relaxation in rigid-chain polymer systems. Using relaxation-frequency data at glass-transition temperatures, the authors calculate activation free energy, heat, and …
This paper develops a probabilistic method for calculating durability and failure probability of turn insulation in low-voltage electrical machine windings, especially random-wound asynchronous motors. The model treats insulation failure as arising from defects in adjacent turns and from breakdown o…
This paper examines how the operating conditions of a semiautomatic winding machine affect defects in the turn insulation of asynchronous motor windings. Using a central composite rotatable experimental design, the authors varied winding speed and wire tension for wires with three initial levels of …
This study examines how operating parameters in stator slot insulation and winding manufacture affect through defects in the groundwall insulation of induction motors. Using statistical factorial experiment designs, the authors test varnished cloth specimens after processing on an IPS-3 slot-insulat…
This paper examines the long-term electric strength of insulating rubbers for cable applications under combined electric field, temperature, and static tensile deformation. Flat specimens of several rubber compositions were tested to breakdown, and lifetime curves were analyzed as functions of elect…
This paper reviews the temperature and time dependence of polymer strength, treating fracture as a kinetic process influenced by stress, temperature, relaxation, and structural change. It discusses the Zhurkov thermofluctuation equation, methods for determining activation energy and structural coeff…
This paper examines how plasticization and modification affect the thermal expansion and glass-transition behavior of thermoplastic polymers, using the free-volume concepts of Fox, Flory, Simha, and Boyer as a framework. Volumetric expansion coefficients were measured with a quartz dilatometer for p…
This study examines how separate factors in ionization aging affect the structure and electrical properties of insulating rubber vulcanizates based on an unfilled and a filled TShM-40 model composition. Thin specimens were aged under full partial-discharge ionization in air, exposure to discharge pr…
This paper develops a calculation for the time to electrical discharge in dielectric rocks subjected to a local high intensity electric field in the Earth’s crust. Using fluctuation theory of solid fracture, the authors derive a breakdown time expression that incorporates electric field strength, te…
This paper examines electrical phenomena accompanying the mechanical fracture of solid dielectrics, focusing on charge separation at crack surfaces and the resulting partial discharges in the gas-filled crack. The authors estimate surface charge density and electric field strength for ionic crystals…
This study examines how extrusion conditions affect the geometry and properties of polyethylene insulation on single-conductor wire. Using a 24M-45 extruder, the authors measured diameter fluctuations statistically and evaluated the effects of drawdown ratios from 1.0 to 2.0 on mechanical strength, …
This paper examines the inception time of partial breakdown microchannels in solid polymer dielectrics subjected to a nonuniform electric field, treating it as the first stage of electrical breakdown. Using thermofluctuation theory, the authors derive and apply an expression relating inception time …
This study examines the dynamic shear modulus of thin polymer films used in electrical insulation over the temperature range 20 to 200 °C. Using a freely damped torsional oscillation method during continuous heating, the authors measured polyimide, polyester, polyurethane, polyepoxyimide, polyepoxyc…
This paper examines methods for recovering gold from spent concentrated cyanide and ferrocyanide alkaline gilding electrolytes, focusing on aluminum as an alternative cementation agent to zinc. Experiments with electrolytes containing up to about 13 g/L gold show that adding sodium hydroxide markedl…
This paper describes a device designed to compare the sharpenability of pencils made from wood treated by different methods, addressing the lack of suitable instruments for evaluating resistance to cutting in pencil manufacture. The apparatus feeds a pencil into a rotating sharpening head under a co…
This paper examines acid based treatment of Siberian cedar pine slats for pencil manufacture as an alternative to established thermo ammonia processing, which gives low usable wood yield. Laboratory experiments on normal wood and wood with varying heartwood content tested impregnation with nitric an…
This paper examines the role of electrokinetic phenomena in the aggregation and pelletizing of fine-grained materials, arguing that conventional mechanical descriptions insufficiently account for physicochemical processes in colloidal systems. It relates pelletizability and raw granule strength to t…
This paper addresses flare formation and smoke emission in green silicon carbide production at the Tashkent Abrasive Combine, attributed to the poor gas permeability and high evaporation behavior of fine-grained quartz sand charges. It describes a simplified granulation process using quartz sand, co…
This paper reports pilot industrial tests of a method for improving the particle size distribution of crystalline ammonium sulfate by adding magnesium chloride as a microadditive during production. Tests at the Kemerovo Coke-Chemical Plant introduced MgCl2 solution into operating saturator cycles un…
This paper examines gas permeability as an indirect, rapid indicator of the aggregate state and flowability of moist fine-grained coal materials. Using a standard apparatus, the authors measured air permeability of coal flotation concentrate and 0 to 1 mm run-of-mine coal fractions at varying moistu…
This study examines how moisture content and granulometric composition affect the vibratory compaction of fine-grained materials. Laboratory experiments were conducted on Tashlinsk quartz sand and marshalite using an electrovibrational stand at 100 Hz and 0.45 mm amplitude, with bulk density measure…
This paper examines methods for estimating molecularly bound water in fine-grained materials, a parameter linked to surface properties and therefore to granulation behavior. Using natural dusty quartz marshalite, the authors compare the conventional maximum molecular moisture capacity method based o…
