Volodymyr M Pavlovych

Kiev Institute for Nuclear Research

In this work, propagation of the stationary nuclear fission wave was simulated for series of fixed power values using Monte Carlo code Serpent. The wave moved in the axial direction in 5 m long cylindrical core of fast reactor with pure U-238 raw fuel. Stationary wave mode arises some period later after the wave ignition and lasts sufficiently long...

Conceiving the possibility of using plastic scintillator bars as robust detectors for antineutrino detection for the remote reactor monitoring and nuclear safeguard application we study expected basic performance by Monte Carlo simulation. We present preliminary results for a 1 m3 highly segmented detector made of 100 rectangular scintillation bars...

Axial motion of the stationary nuclear fission wave in the cylindrical core of the traveling wave reactor (known also as CANDLE) using an effective one-dimensional model of the fast spectrum reactor with uranium-plutonium fuel we studied. The model includes one-group diffusion equation for the neutron flux and kinetic equations for nuclear densitie...

We study the stationary nuclear fission wave (NFW) in the CANDLE fission wave reactor analytically and numerically. The focus of this work is to elucidate in a universally applicable way the variation of wave velocity and power with respect to parameters of reactor composition and design. We also study the stability of such waves solving the time-d...

Project of a segmented antineutrino detector is developed with the use of plastic scintillator rectangular bars 10 × 10 × 100 cm, wrapped in Gd foils and assembled to an array of 1 m3 active volume. The scintillation array is sandwiched at both sides by the continuous light guides of 100 × 100 × 10 cm size, from which the scintillation light is spr...

This paper considers the application of the Feynman method of neutron noise analysis for determination of the deep subcriticality parameters for multiplying systems. In particular, it is shown that the selection of the width of the timeslots, for which the mean and variance of the number of the neutron detector counts should be determined, can sign...

This paper is mainly devoted to the proof-of-principle implementation of the SERPENT code for the simulation of traveling wave reactors. The investigation of SERPENT 1.1.19 code for multiprocessor tasks with long burnup steps was performed. The investigation of SERPENT 2 code for multiprocessor tasks with long burnup steps was performed. Methods to...

Neutron-physical modelings of two-zone subcritical reactor driven by high-intensity neutron generator are considered. The cascade principle in subcritical reactors, the use of which can hypothetically substantially amplify the neutron flux from the external source is discussed in this article. The theoretical preconditions of the cascade principle...

The main problems of transmutation of high-level radioactive waste (minor actinides and long-lived fission products) are considered in our work. The range of radioactive waste of nuclear power is analyzed. The conditions under which the transmutation of radioactive waste will be most effective are analyzed too. The modeling results of a transmutati...

In regard to intensive development of accelerator driven system (ADS) in the past 20 years and a promising possibility of radioactive waste transmutation in such systems, we have proposed the physical project of a sub-critical research reactor driven by an external neutron source. The basis of such a research reactor is a good optimized two zone su...

In regard to intensive development of accelerator driven system (ADS) in the past 20 years and a promising possibility of radioactive waste transmutation in such systems, we have proposed the physical project of a sub-critical research reactor driven by an external neutron source. The basis of such a research reactor is a good optimized two zone su...

The review is dedicated to natural electromagnetic disturbances of the radio-wave range (unities of kHz and higher), with sources located in the earth's lithosphere. The attention is focused on nonlinear aspects of mechanic-electromagnetic transformations in the earth's crust and the models of nonlinear interactions in the system of physical fields...

At present, the conception of design and construction of new research reactor and scientific nuclear centre in Ukraine is developed. In this conception the construction of the pool type reactor with heat power 20 - 30 MW and with neutron flux in the core about 4. 1014 n/(cm2 · s) is provided. The conception development does not assume an analysis o...

This paper aims to make clear the physics of the processes determining the stationary wave of the nuclear burning, also to find the effective theoretical approaches for determining of its parameters. It is shown that the diffusion equation for fluense may be used both for the stationary and unstationary processes in the nuclear burning wave. Also,...

This paper discusses the problems of the natural Earth pulse electromagnetic emission appearance and its usage for the Earth interior exploration. We have proposed the model of such emission generation based on the initiation of optical vibrations of complex crystal lattice and therefore associated electromagnetic oscillations that appear due to fo...

Представлены результаты предварительной интерпретации измерений у побережья Антарктиды методом геополяритонного зондирования (ГПЗ), который позволяет получать информацию о напряженно-деформированном состоянии горных пород. Измерения выполнены в 2005–2006 гг. на леднике о. Галиндез и на судах X–XI Украинской Антарктической экспедиции вдоль побережья...