135 research outputs found
Examination of evidence for collinear cluster tri-partition
In a series of the experiments at different time-of-flight spectrometers of
heavy ions we have observed manifestations of a new at least ternary decay
channel of low excited heavy nuclei. Due to specific features of the effect, it
was called collinear cluster tri-partition (CCT). The experimental results
obtained initiated a number of theoretical articles dedicated to different
aspects of the CCT. We compare theoretical predictions with our experimental
data, only partially published so far. The model of one of the most populated
CCT modes that gives rise to the so called "Ni-bump" is discussed. Detection of
the 68-72Ni fission fragments with a kinetic energy E<25 MeV at the
mass-separator Lohengrin is proposed for an independent experimental
verification of the CCT.Comment: 16 pages, 14 figure
Collinear cluster tripartition as sequential binary fission in the U(n,f) reaction
The mechanism leading to the formation of the observed products of the
collinear cluster tripartition is carried out within the framework of the model
based on the dinuclear system concept. The yield of fission products is
calculated using the statistical model based on the driving potentials for the
fissionable system. The minima of potential energy of the decaying system
correspond to the charge numbers of the products which are produced with large
probabilities in the sequential fission (partial case of the collinear cluster
tripartition) of the compound nucleus. The realization of this mechanism
supposes the asymmetric fission channel as the first stage of sequential
mechanism. It is shown that only the use of the driving potential calculated by
the binding energies with the shell correction allows us to explain the yield
of the true ternary fission products. The theoretical model is applied to
research collinear cluster tripartition in the reaction U(n,f). Calculations showed that in the first stage of this fission reaction,
the isotopes Ge and Nd are formed with relatively large
probabilities and in the second stage of sequential fission of the isotope Nd
mainly Ni and Ge are formed. This is in agreement with the yield of the isotope
Ni which is observed as the product of the collinear cluster
tripartition in the experiment.Comment: 20 pages, 9 figure
Scission Point Calculations and Physical Treating of the 'Ni-bump' in 252Cf (sf)
In a series of the experiments at different time-of-flight spectrometers of heavy ions we have observed manifestations of a new at least ternary decay channel of low excited heavy nuclei. Due to specific features of the effect, it was called collinear cluster tri-partition (CCT). The experimental results obtained initiated a number of theoretical articles dedicated to different aspects of the CCT. In the report we compare the theoretical predictions with our experimental data, only partially published so far. The developed model of one of the most populated CCT modes that gives rise to the so called “Ni-bump” is discussed
Neurotechnology in Action: Automated Profiling as a Tool for Improving the Efficiency of the Personnel Management Process on the Example of “Serchinform Profilecenter”
The article examines the relevance and possibilities of using neurotechnology automated profiling in HR management practice as one of the tools for improving the efficiency of personnel management, summarizes the experience of creating and operating Serchinform ProfileCenter.Изучаются актуальность и возможности использования в практике HR-менеджмента нейротехнологии автоматизированного профайлинга как одного из инструментов повышения эффективности управления персоналом. Обобщен опыт создания и функционирования «СерчИнформ ProfileCenter»
Abstract kinetic equations with positive collision operators
We consider "forward-backward" parabolic equations in the abstract form , , where and are
operators in a Hilbert space such that , , and
. The following theorem is proved: if the operator is
similar to a self-adjoint operator, then associated half-range boundary
problems have unique solutions. We apply this theorem to corresponding
nonhomogeneous equations, to the time-independent Fokker-Plank equation , , , as well as to
other parabolic equations of the "forward-backward" type. The abstract kinetic
equation , where is injective and
satisfies a certain positivity assumption, is considered also.Comment: 20 pages, LaTeX2e, version 2, references have been added, changes in
the introductio
Simulation of Spin Systems with Competing Interactions by the Classical Monte Carlo
We performed multicanonical replica-exchange Monte-Carlo simulations for frustrated 2D Ising model with competing interactions.Работа была выполнена при поддержке программы повышения конкурентоспособности Уральского Федерального университета (Акт 211 Правительства РФ, соглашение № 02.A03.21.0006) и Министерства образования и науки РФ, проект FEUZ-2020-0054
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