نتایج جستجو برای: fission reaction

تعداد نتایج: 426534  

2001
K.-H. Schmidt J. Benlliure A. Junghans B. Jurado K. Helariutta V. Ricciardi J. Pereira J. Taieb F. Vivès

The results of model calculations on nuclide yields produced in selected scenarios using reactions with U nuclei are presented. The calculation combines the modelling of the initial reaction mechanism, the deexcitation process including the fission competition with the prediction of the nuclide production in the fission of excited U and all daughter nuclei produced in the evaporation cascade. T...

Journal: :Chemical Geology 2022

Fission-track annealing models aim to extrapolate laboratory kinetics the geological timescale for application studies. Model trends empirically capture mechanisms of track length reduction. To facilitate interpretation fission-track trends, a formalism, based on quantities already in use study physicochemical processes, is developed and allows calculation rate constants, Arrhenius activation e...

Journal: :Physics Letters B 2021

For the 68Zn + 112Sn reaction Coulomb parameter Z1Z2 is equal to 1500 that close threshold value for appearance of quasifission process. It was found mass-energy distributions fragments differ significantly from those obtained in 36Ar 144Sm leading formation same composite system 180Hg at similar excitation energies about 50 MeV. In case with ions, mass distribution fissionlike has a wide two-h...

2013
R. Yanez T. L. Khoo

Background: The cross section for forming a heavy evaporation residue in fusion reactions depends on the capture cross section, the fusion probability, PCN, i.e., the probability that the projectile-target system will evolve inside the fission saddle point to form a completely fused system rather than reseparating (quasifission), and the survival of the completely fused system against fission. ...

2003
Ş. Mişicu A. Săndulescu G. M. Ter-Akopian W. Greiner

The recent advent of experimental techniques in which the dynamical characteristics of fission fragments are determined more accurately prompted us to investigate the angular momentum acquired by fragments in a model which describes the cold ~neutronless! fission of Cf as the decay of a giant nuclear molecule. The molecular configuration is a consequence of the interplay between the attractive ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1392

abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...

Journal: :Physical Review C 2022

The combined dinuclear system (DNS) and statistical model implanted in KEWPIE2 have been used to study the prospects for synthesis of a superheavy element (SHE) with $Z=119$ $^{54}$Cr+$^{243}$Am fusion reaction. method calculation has verified by description evaporation residue cross sections measured $^{48}$Ca+$^{243}$Am calculated results partial total complete fusion, quasifission, fast fiss...

Journal: :Physical Review C 2021

Ternary fission of actinides probes the state nucleus at scission. Light clusters are produced in space and time very close to scission point. Within nonequilibrium statistical operator method, a generalized Gibbs distribution is constructed from information given by observed yields isotopes. Using this relevant operator, calculated taking excited states continuum correlations into account, acc...

Journal: :Physical Review C 2022

The combined dinuclear system (DNS) and statistical model implanted in KEWPIE2 have been used to study the prospects for synthesis of a superheavy element (SHE) with $Z=119$ $^{54}$Cr+$^{243}$Am fusion reaction. method calculation has verified by description evaporation residue cross sections measured $^{48}$Ca+$^{243}$Am calculated results partial total complete fusion, quasifission, fast fiss...

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