17 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
13 papers
Experimental nuclear charge density and theoretical description of the above-barrier light heavy-ion fusion process
I. I. Gontchar, M. V. Chushnyakova
Theoretical modeling of nucleus-nucleus collision often is based on the nucleus-nucleus potential. One of the advanced methods for constructing this potential is the semi-microscop…
Sub-barrier heavy-ion fusion/capture: Accurate accounting for zero-point quadrupole shape oscillations with realistic nucleus-nucleus potential
I. I. Gontchar, M. V. Chushnyakova
Although the study of collisions of heavy ions resulting in formation of dinuclear systems has a long history this process still is a subject of experimental and scientific activit…
Systematic application of the M3Y NN forces for describing the capture process in heavy-ion collisions involving deformed target nuclei
I. I. Gontchar, M. V. Chushnyakova, O. M. Sukhareva
We present results of a systematic study of the capture process through the barrier penetration model. The nucleus-nucleus interaction potential is calculated using the double-fold…
Activated decay of a metastable state: Transient times for small and large dissipation
Maria Chushnyakova, Igor Gontchar, Natalya Khmyrova
The time evolution of the thermally activated decay rates is considered. This evolution is of particular importance for the recent nanoscale experiments discussed in the literature…
Description of the reactions 36S + 238U and 64Ni + 238U within the two-stage fusion-fission model
V. L. Litnevsky, F. A. Ivanyuk, G. I. Kosenko +1
We describe the capture, fusion, fission and evaporation residue formation cross sections of superheavy nuclei within the proposed earlier two stages dynamical model. The approachi…
Accuracy of the analytical escape rate for a cusp barrier in the overdamping regime
Alexander Zakharov, Maria Chushnyakova, Igor Gontchar
For the first time, the accuracy of the approximate analytical Kramers formula for the thermal decay rate over a cusp barrier, , is checked numerically for the overdamping reg…
Two ways for numerical solution of the Kramers problem for spatial diffusion over an edge-shaped barrier
Maria Chushnyakova, Igor Gontchar, Alexander Zakharov +1
Thermal decay rate over an edge-shaped barrier at high dissipation is studied numerically through the computer modeling. Two sorts of the stochastic Langevin type equations are app…
Fission rate of excited nuclei at variable friction in the energy diffusion regime
Maria Chushnyakova, Igor Gontchar
Presently, it is well established that fission of excited nuclei is a dynamical process being a subject of fluctuations and dissipation. In the literature, there are indications th…
Above-barrier heavy-ion fusion cross-sections using the relativistic mean-field approach: case of spherical colliding nuclei
Maria V. Chushnyakova, Mrutunjaya Bhuyan, Igor I. Gontchar +1
The double folding (DF) approach is one of the widely used methods for finding nucleus-nucleus interaction potential. In the present work, the influence of the nuclear matter densi…
Description of the mass-asymmetric fission of the Pt isotopes, obtained in the reaction Ar + Nd within the two-stage fusion-fission model
V. L. Litnevsky, F. A. Ivanyuk, G. I. Kosenko +1
The two stages dynamical stochastic model developed earlier for description of fusion-fission reactions is applied to the calculation of mass- and energy-distributions of fission f…
Thermal decay of a metastable state: the influence of the re-scattering on the quasistationary dynamical rate
Maria Chushnyakova, Igor Gontchar
When a Brownian particle, initially being in the potential well, overcomes the barrier and moves to the absorptive border, it still has a chance to be scattered back to the well by…
Thermal decay rate of a metastable state with two degrees of freedom: dynamical modeling versus approximate analytical formula
Igor Gontchar, Maria Chushnyakova
Accuracy of the Kramers approximate formula for the thermal decay rate of the metastable state is studied for the two-dimensional potential pocket. This is done by the comparison w…
Describing the heavy-ion above-barrier fusion using the bare potentials resulting from Migdal and M3Y double-folding approaches
Igor Gontchar, Maria Chushnyakova
Systematic calculations of the Coulomb barrier parameters for collisions of spherical nuclei are performed within the framework of the double folding approach. The value of the par…