Annular dose, AD is a concept deduced from radial dose simulated codes that enables one to draw a map of dose distribution around the ion’s path at the nanometer scale. The distribution of dose for different equal LET elements' groups of the same LET (in keV.µm-1) were studied using this concept.
- Annular-dose (AD) is a new conception introduced, based on the radial dose...
Abstract. Thesis concerns to a popular theme the fractal dimension of various objects and structural formations. The relevance of the theme is followed of the extensive literature in various fields of modern natural science on the use of fractals and the calculation of fractal dimensions of objects. The box-counting method, used in such distant fields as economics, medicine et cetera is...
We performed the Metropolis calculations of the thermodynamic properties of the system of dipoles on a 2D pentagonal Cairo lattice and revealed two explicit peaks in the temperature behavior of the heat capacity. This system is a sort of spin ice, which was experimentally studied in [Phys. Rev. Materials 3, 104402, 2019].
The low-temperature peak is due entirely to long-ranged dipole-dipole...
Computation of the pi0gg decay width at high temperatures in the framework of the Nambu-Jona-Lasinio model requires the calculation of an integral with singularity 1/(x-c). To solve the problem, the most suitable method must be found that can effectively bypass the singularity and allow to obtain an answer with a minimal error and the high computation speed. In this work were considered...
Control problems for nonlinear models of heat and mass transfer of a viscous and viscous conducting fluid are studied. It is assumed that the coefficients in equations and boundary conditions of the considered models depend non-linearly on the substance concentration and on the temperature, as well as on spatial variables. Thus, the heat and mass transfer models used in this work generalize...
Intense fluxes of very cold neutrons (VCN) with the velocities between 20 and about 200 m/s are of great interest for a variety of applications both in fundamental research and neutron scattering. However, the absence of efficient VCN reflectors was one of the most significant problems for developing the intense VCN sources. The reflectors allow neutrons to be extracted from the source,...
We consider the light-like trajectories of a massive relativistic anyon travelling in a uniform stationary magnetic field. We show that the classical particle paths are helical lines with the light-like tangent vector. The configuration of magnetic field determines the equations of motion for the symmetry axis of helix, while the step of helix is determined by spin. The deviation of the...
The reconstruction of elementary particle trajectories (tracking) is an important part of event reconstruction in high-energy physics experiments. The recurrent neural network model TrackNETv3 was proposed as an analogue to classical tracking methods based on the Kalman filter, which allowed us to obtain high tracking efficiency values for the BM@N and BES-III experiments. Based on previous...
We present a use case of our SU2 software package of SU(2) scalars. The package offers seamless F77-style coding in C++ for the user, but comes with move-semantix and polymorphic implementations of sub-scalars: arithmetic_scalar and cpx<same>, which is essential for a scientific library (such as our NXV4 library). The use case we present if of a driven damped harmonic oscillator, known to...
A Josephson junction spintronic model is investigated by means of the two-stage Gauss–Legendre algorithm for numerical solution of the respective system of nonlinear differential equations in a wide range of physical parameters. Parallel implementation is based on the MPI and OpenMP techniques. The simulations have been carried out at the Heterogeneous Platform “HybriLIT” and on the...
In this paper we study the properties of particles in hot and dense
nuclear matter within the framework of the SU(3) Nambu - Jona - Lasinio
model. To calculate the mass and width of diquars (scalar, pseudo
scalar, vector, axial vector) as functions of temperature, the
Bethe-Salpeter equation is presented as a system of two equations. To
solve a self-consistent system of the nonlinear...
In Superconductor-Ferromagnet-Supperconductor structure with noncentrosymmetric ferromagnetic interlayer is observed anomalouse Josephson effect. In this structure current-pahse relation demonstrates phase shift Phi-0, which is proportional to the magnetisation of ferromagnetic layer and such junction are colled Phi-0 junction.
In this work we simulate dynamics of single junction SQUID...
