17 citations · 63 across the 15 of their papers we have counts for
15 papers
Charge radii of atomic nuclei and shell effects
M. V. Chushnyakova, I. I. Gontchar, E. V. Kulik
In the present work, we study the experimental data on the root mean square charge radii of the spherical atomic nuclei. The purpose of this analysis is to clarify what is the mani…
Modified approach for accounting for dissipation in theoretical description of fusion of complex nuclei
I. I. Gontchar, M. V. Chushnyakova
The process of fusion of complex nuclei is of significant interest as an example of the collective nuclear motion of large amplitude as well as a route for synthesis of new superhe…
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…
Uncertainties in modeling the capture process in heavy-ion collisions
I. I. Gontchar
In the present paper, we study the uncertainties in modeling the collision of complex nuclei (heavy ions) resulting in capture of the nuclei into orbital motion. The effective inte…
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…
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…
Testing the energy diffusion approximation for the escape of a Brownian particle from a potential pocket
Igor I. Gontchar, Maria V. Chushnyakova
For the first time, the energy diffusion approximation is confronted at the percent level with the exact numerical modeling of thermal decay of a metastable state. The latter is pe…
Probing the relativistic mean field effective NN forces for fusion of spherical colliding nuclei within a dynamical model
Maria Chushnyakova, Igor Gontchar, Natalya Khmyrova
For the first time, the precise data on the above barrier fusion (capture) cross-sections for the reactions involving spherical colliding nuclei are quantitatively analyzed using t…
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…
Surface diffuseness anomaly in heavy-ion fusion potentials
K. Hagino, M. Dasgupta, I. I. Gontchar +3
Recent high precision experimental data for heavy-ion fusion cross sections at energies in the vicinity of the Coulomb barrier systematically show that a strikingly large surface d…