Sergei P. Maydanyuk
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View article: Microscopic study of nuclei synthesis in pycnonuclear reaction $^{12}$C + $^{12}$C in neutron stars
Microscopic study of nuclei synthesis in pycnonuclear reaction $^{12}$C + $^{12}$C in neutron stars Open
Purpose To investigate synthesis of nuclei in pycnonuclear reactions in dense medium of neutron stars on the basis of understanding, how the compound nucleus is formed during collision of two nuclei. To implement microscopic formulation of…
View article: Rotating neutron stars within the macroscopic effective-surface approximation
Rotating neutron stars within the macroscopic effective-surface approximation Open
The macroscopic model for a neutron star (NS) as a perfect liquid drop at the equilibrium is extended to rotating systems with a small frequency $ω$ within the effective-surface (ES) approach. The NS angular momentum $I$ and moment of iner…
View article: Manifestation of quark effects in nuclei via bremsstrahlung analysis in the proton-nucleus scattering
Manifestation of quark effects in nuclei via bremsstrahlung analysis in the proton-nucleus scattering Open
\textbf{Background} (1) The incoherent emission of photons is dominant comparing to coherent one in proton-nucleus scattering. The incoherent bremsstrahlung is very sensitive to the magnetic moments of nucleons in nuclei. (2) According to …
View article: Structure of nuclei in dileptons production in proton-nucleus scattering
Structure of nuclei in dileptons production in proton-nucleus scattering Open
We investigate production of electron-positron pairs (dileptons) in the scattering of protons off nuclei. Focus is directed on clarifying role of nuclear interactions which make basis in mechanisms of scattering process and structure of nu…
View article: Leptodermic corrections to the TOV equations and nuclear astrophysics within the effective surface approximation
Leptodermic corrections to the TOV equations and nuclear astrophysics within the effective surface approximation Open
The macroscopic model for a neutron star (NS) as a liquid drop at the equilibrium is used to extend the Tolman-Oppenheimer-Volkoff (TOV) equations taking into account the gradient terms responsible for the system surface. The parameters of…
View article: Structure of the deuteron from an analysis of bremsstrahlung emission in proton-deuteron scattering in cluster models
Structure of the deuteron from an analysis of bremsstrahlung emission in proton-deuteron scattering in cluster models Open
Emission of bremsstrahlung photons in the scattering of protons off deuterons is investigated on the microscopic cluster basis in a wide region of beam energy from low energies up to 1.5 GeV. Our aim is to construct a model extracting new …
View article: Erratum to “Probing high-momentum component in nucleon momentum distribution by neutron-proton bremsstrahlung γ-rays in heavy ion reactions” [Phys. Lett. B 850 (2024) 138514]
Erratum to “Probing high-momentum component in nucleon momentum distribution by neutron-proton bremsstrahlung γ-rays in heavy ion reactions” [Phys. Lett. B 850 (2024) 138514] Open
View article: Nucleon microscopy in proton-nucleus scattering via analysis of bremsstrahlung emission: role of incoherent emission
Nucleon microscopy in proton-nucleus scattering via analysis of bremsstrahlung emission: role of incoherent emission Open
We study electromagnetic form factors of protons in proton-nucleus scattering via analysing of experimental cross-sections of accompanying bremsstrahlung photons. A new bremsstrahlung model for proton-nucleus scattering is developed, where…
View article: Study of structure of deuteron from analysis of bremsstrahlung emission in proton-deuteron scattering in cluster models
Study of structure of deuteron from analysis of bremsstrahlung emission in proton-deuteron scattering in cluster models Open
Purpose: In this paper we investigated emission of bremsstrahlung photons in the scattering of protons off deuterons within the microscopic cluster models in a wide region of the beam energy from low energies up to 1.5 GeV. Methods: Three-…
View article: Neutron stars as a dense liquid drop at equilibrium within the effective surface approximation
Neutron stars as a dense liquid drop at equilibrium within the effective surface approximation Open
The macroscopic model is formulated for a neutron star (NS) as a perfect liquid drop at the equilibrium. We use the leptodermic approximation $a/R\ll 1$, where $a$ is the crust thickness of the effective NS surface (ES), and $R$ is the mea…
View article: Probing high-momentum component in nucleon momentum distribution by neutron-proton bremsstrahlung γ-rays in heavy ion reactions
Probing high-momentum component in nucleon momentum distribution by neutron-proton bremsstrahlung γ-rays in heavy ion reactions Open
The high momentum tail (HMT) of nucleons, as a signature of the short-range correlations in nuclei, has been investigated by the high-energy bremsstrahlung γ rays produced in 86Kr+124Sn at 25 MeV/nucleon. The energetic photons are measured…
View article: Incoherent processes in dileptons production in proton-nucleus scattering at high energies
Incoherent processes in dileptons production in proton-nucleus scattering at high energies Open
$\mathbf{Purpose}$: Incoherent processes in production of lepton pairs in the scattering of protons off nuclei are investigated. $\mathbf{Methods}$: New quantum mechanical model is constructed which uses generalization of the nuclear model…
View article: Synthesis of Elements in Compact Stars in Pycnonuclear Reactions with Carbon Isotopes: Quasibound States vs. States of Zero-Points Vibrations
Synthesis of Elements in Compact Stars in Pycnonuclear Reactions with Carbon Isotopes: Quasibound States vs. States of Zero-Points Vibrations Open
(1) Purpose: Conditions of formation of compound nuclear systems needed for synthesis of heavy nuclei in pycnonuclear reactions in compact stars are studied on a quantum mechanical basis. (2) Methods: The method of multiple internal reflec…
View article: Probing high-momentum component in nucleon momentum distribution by neutron-proton bremsstrahlung γ-rays in heavy ion reactions
Probing high-momentum component in nucleon momentum distribution by neutron-proton bremsstrahlung γ-rays in heavy ion reactions Open
The high momentum tail (HMT) of nucleons, as a signature of the short-range correlations in nuclei, has been investigated by the high-energy bremsstrahlung $γ$ rays produced in $^{86}$Kr + $^{124}$Sn at 25 MeV/u. The energetic photons are …
View article: Quantum design in the study of pycnonuclear reactions in compact stars and new quasibound states
Quantum design in the study of pycnonuclear reactions in compact stars and new quasibound states Open
Quantum effects in pycnonuclear reactions in compact stars at zero temperatures are studied with high precision. The reaction 16O + 16O was analyzed using the method of multiple internal reflections. The study of such reactions requires fu…
View article: Synthesis of elements in compact stars in pycnonuclear reactions with Carbon isotopes: Quasibound states versus states of zero-points vibrations
Synthesis of elements in compact stars in pycnonuclear reactions with Carbon isotopes: Quasibound states versus states of zero-points vibrations Open
(1) Purpose: Conditions of formation of compound nuclear system needed for synthesis of heavy nuclei in pycnonuclear reactions in compact stars are studied on a quantum mechanical basis. (2) Methods: Method of multiple internal reflections…
View article: Systematic study of bremsstrahlung emission in reactions with light nuclei in cluster models
Systematic study of bremsstrahlung emission in reactions with light nuclei in cluster models Open
A new model of bremsstrahlung emission in the scattering of light nuclei is constructed with main focus on strict cluster formulation of nuclear processes. Analysis is performed in frameworks of the folding approximation of the formalism w…
View article: Quantum design in study of pycnonuclear reactions in compact stars and new quasibound states
Quantum design in study of pycnonuclear reactions in compact stars and new quasibound states Open
Pycnonuclear reactions in the compact stars at zero temperatures are studied on quantum mechanical basis in the paper. Formalism of multiple internal reflections is generalized for analysis, that was developed for nuclear decays and captur…
View article: Enhancement of incoherent bremsstrahlung in proton-nucleus scattering in the $Δ$-resonance energy region
Enhancement of incoherent bremsstrahlung in proton-nucleus scattering in the $Δ$-resonance energy region Open
We investigate emission of the bremsstrahlung photons in the scattering of protons off nuclei at the $Δ$-resonance energy region. Including properties of $Δ$-resonance in the nucleus-target to the bremsstrahlung model, we find the followin…
View article: Bremsstrahlung emission from nuclear reactions in compact stars
Bremsstrahlung emission from nuclear reactions in compact stars Open
Bremsstrahlung emission of photons during nuclear reactions inside dense stellar medium is investigated in the paper. For that, a new model of nucleus is developed, where nuclear forces combine nucleons as bound system in dependence on dee…
View article: Search of cluster structure in nuclei via analysis of bremsstrahlung emission
Search of cluster structure in nuclei via analysis of bremsstrahlung emission Open
We investigate emission of bremsstrahlung photons during scattering of $α$-particles off nuclei. For that, we construct bremsstrahlung model for $α$-nucleus scattering, where a new formalism for coherent and incoherent bremsstrahlung emiss…
View article: Nucleon microscopy in proton-nucleus scattering via analysis of bremsstrahlung emission
Nucleon microscopy in proton-nucleus scattering via analysis of bremsstrahlung emission Open
We investigate an idea, how to use analysis of the bremsstrahlung photons to\nstudy the internal structure of proton under nuclear reaction with nucleus. A\nnew model is constructed to describe bremsstrahlung emission of photons which\nacc…
View article: Manifestation of the important role of nuclear forces in the emission of photons in pion scattering off nuclei
Manifestation of the important role of nuclear forces in the emission of photons in pion scattering off nuclei Open
The bremsstrahlung of photons emitted during the scattering of pi(+) mesons off nuclei is studied for the first time. The role of interactions between pi(+) mesons and nuclei in the formation of the bremsstrahlung emission is analyzed in d…
View article: What can we know about hypernuclei via analysis of bremsstrahlung photons?
What can we know about hypernuclei via analysis of bremsstrahlung photons? Open
We investigate possibility of emission of the bremsstrahlung photons in nuclear reactions with hypernuclei for the first time. A new model of the bremsstrahlung emission which accompanies interactions between $α$ particles and hypernuclei …
View article: New quasibound states of the compound nucleus in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>-particle capture by the nucleus
New quasibound states of the compound nucleus in-particle capture by the nucleus Open
We generalize the theory of nuclear decay and capture of Gamow that is based on tunneling through the barrier and internal oscillations inside the nucleus. In our formalism an additional factor is obtained, which describes distribution of …
View article: Quantum corrections to the Relativistic mean-field theory
Quantum corrections to the Relativistic mean-field theory Open
In this paper, we compare the RMF theory and the model of deformed oscillator shells (DOS) in description of the quantum properties of the bound states of the spherically symmetric light nuclei. We obtain an explicit analytical relation be…
View article: Study of compound nucleus formation via bremsstrahlung emission in proton $α$-particle scattering
Study of compound nucleus formation via bremsstrahlung emission in proton $α$-particle scattering Open
In this paper a role of many-nucleon dynamics in formation of the compound $^{5}{\rm Li}$ nucleus in the scattering of protons off $α$-particles at the proton incident energies up to 20 MeV is investigated. We propose a bremsstrahlung mode…
View article: Study of compound nucleus formation via bremsstrahlung emission in proton $\alpha$-particle scattering
Study of compound nucleus formation via bremsstrahlung emission in proton $\alpha$-particle scattering Open
In this paper a role of many-nucleon dynamics in formation of the compound $^{5}{\rm Li}$ nucleus in the scattering of protons off $\alpha$-particles at the proton incident energies up to 20 MeV is investigated. We propose a bremsstrahlung…
View article: Can a many-nucleon structure be visible in bremsstrahlung emission during $\alpha$ decay?
Can a many-nucleon structure be visible in bremsstrahlung emission during $\alpha$ decay? Open
We analyze if the nucleon structure of the $\alpha$ decaying nucleus can be visible in the experimental bremsstrahlung spectra of the emitted photons which accompany such a decay. We develop a new formalism of the bremsstrahlung model taki…
View article: Can a many-nucleon structure be visible in bremsstrahlung emission during $α$ decay?
Can a many-nucleon structure be visible in bremsstrahlung emission during $α$ decay? Open
We analyze if the nucleon structure of the $α$ decaying nucleus can be visible in the experimental bremsstrahlung spectra of the emitted photons which accompany such a decay. We develop a new formalism of the bremsstrahlung model taking in…