Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Radionov S"'
Autor:
Radionov, S. V.
We have investigated the peculiarities of nuclear descent from a parabolic fission barrier within a generalized Langevin equation with power--law $f(t-t')=(|t-t'|/\tau)^{-\alpha}$ memory function. We have observed much stronger slowing down of the nu
Externí odkaz:
http://arxiv.org/abs/2309.10696
In this contribution, we present the main relations of the Langevin approach to the description of fission or fusion-fission reactions. The results of Langevin calculations are shown for the mass distributions of fission fragments of super-heavy elem
Externí odkaz:
http://arxiv.org/abs/2301.01500
Publikováno v:
In Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena October 2024 187
Autor:
Kolomietz, V. M., Radionov, S. V.
Within a density matrix approach for nuclear many--body system, it is derived non--Markovian Langevin equations of motion for nuclear collective parameters, where memory effects are defined by memory time. The developed stochastic approach is applied
Externí odkaz:
http://arxiv.org/abs/2111.02487
We present the schematic calculations within the Langevin approach in order to investigate the dependence of fission width on the memory time and the excitation energy at low temperatures where the quantum fluctuations play an important role. For thi
Externí odkaz:
http://arxiv.org/abs/2103.14145
Autor:
Radionov, S. V.
We study the perturbative response of a complex quantum system on time changes of an external parameter $X$. The driven dynamics is treated in adiabatic basis of the system's Hamiltonian $\hat{H}[X]$. Within a random matrix approach we obtained non--
Externí odkaz:
http://arxiv.org/abs/1911.01820
Autor:
Kolomietz, V. M., Radionov, S. V.
In the paper, it is studied the influence of Landau-Zener transitions between nuclear many-body states on the dissipative properties of nuclear large--amplitude collective motion. Within the cranking-like approach, we describe the time evolution of a
Externí odkaz:
http://arxiv.org/abs/1812.02187
Publikováno v:
Eur. Phys. J. A (2018) 54: 214
The simple one-parameter nearest neighbor-spacing distribution (NNSD) is suggested for statistical analysis of nuclear spectra. This distribution is derived within the Wigner-Dyson approach in the linear approximation for the level repulsion density
Externí odkaz:
http://arxiv.org/abs/1804.01433
Publikováno v:
Phys. Rev. C 97, 044305 (2018)
Statistical analysis of distributions of the collective states in the actinide and rare-earth nuclei is performed in terms of the nearest neighbor spacing distribution (NNSD). Several approximations, such as the linear approach to the level repulsion
Externí odkaz:
http://arxiv.org/abs/1711.01848
Autor:
Pilnik, N. P., Radionov, S. A.
Publikováno v:
Mathematical Models & Computer Simulations; Aug2024, Vol. 16 Issue 4, p557-571, 15p