Study of fission dynamics with the three-dimensional Langevin equations

Eslamizadeh, H.

doi:10.1140/epja/i2011-11134-0

Cited by 22 publications

(7 citation statements)

References 30 publications

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“…The deformation coordinate (q) assumes a value of 0.6 (q ) when the neck of the fissioning nucleus starts to develop and q=0.8 (q ) at the saddle state configuration. [6,14,59,[76][77][78][79], dynamical model calculations are represented by filled circles (orange), and the filled squares (green) denote the results of multi-dimensional dynamical calculations [28,30,34,80]. It must be remarked here that even though the present analysis reasonably reproduces the experimental data without invoking any shell corrections at high excitation energies, we cannot possibly conclude that shell effects are not relevant in the analysis.…”

Section: Resultsmentioning

confidence: 70%

“…(color online) Comparison of measured pre-scission neutron multiplicities ( ) with the results of the 1D model (present work) and multi-dimensional models. The filled triangles (blue) denote experimental data[6,14,59,[76][77][78][79], dynamical model calculations are represented by filled circles (orange), and the filled squares (green) denote the results of multi-dimensional dynamical calculations[28,30,34,80].…”

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confidence: 99%

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Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: ²¹⁰Po, ²¹²Rn, and ²¹³Fr*

Arora¹,

Sugathan²,

Chatterjee³

2023

Chinese Phys. C

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Dissipative dynamics of nuclear fission is a well confirmed phenomenon described either by a Kramers-modified statistical model or by a dynamical model employing the Langevin equation. Though dynamical models as well as statistical models incorporating fission delay are found to explain the measured fission observables in many studies, it nonetheless shows conflicting results for shell closed nuclei in the mass region 200. Analysis of recent data for neutron shell closed nuclei in excitation energy range 40−80 MeV failed to arrive at a satisfactory description of the data and attributed the mismatch to shell effects and/or entrance channel effects, without reaching a definite conclusion. In the present work we show that a well established stochastic dynamical code simultaneously reproduces the available data of pre-scission neutron multiplicities, fission and evaporation residue excitation functions for neutron shell closed nuclei 210Po and 212Rn and their isotopes 206Po and 214,216Rn without the need for including any extra shell or entrance channel effects. The calculations are performed by using a phenomenological universal friction form factor with no ad-hoc adjustment of model parameters. However, we note significant deviation, beyond experimental errors, in some cases of Fr isotopes.

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Section: Resultsmentioning

confidence: 70%

mentioning

confidence: 99%

Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: ²¹⁰Po, ²¹²Rn, and ²¹³Fr*

Arora¹,

Sugathan²,

Chatterjee³

2023

Chinese Phys. C

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“…The set of Langevin equations in three-dimensional collective coordinate space has been applied for the description of binary decay firstly in the heavy nuclei ( 244 Cm, 184 Pt, 162 Yb) [19,48] and later for rare-earth nuclei [49,50]. The authors compared the fission fragment distributions, angular momentum dependence, fission barriers and pre-scission neutron multiplicities calculated with the FRLDM model to experimental data.…”

Section: Introductionmentioning

confidence: 99%

Fission fragment distributions within dynamical approach

et al. 2017

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The review covers recent developments and achievements in the dynamical description of fission process at high excitation energy. It is shown that the dynamical approach based on multidimensional Langevin equations combined with the statistical description of nuclear decay by particles evaporation is capable of fairly well describing the formation of fission fragment mass-energy, charge, and angular distributions of fission fragments in coincidence with the pre-and post-scission particle emission. The final yields of fission and evaporation residues channels products could be obtained. The detailed description of fission dynamics allows studying different stages of fission process, indicating the most important ingredients governing fission process and studying in detail such fundamental nuclear properties as nuclear viscosity and fission timescale. The tasks and perspectives of multidimensional dynamical approach are also discussed.

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“…Furthermore, we also use the three-dimensional Langevin model was developed in references (Karpov et al, 2001(Karpov et al, , 2007Nadtochy et al, 2002;Ryabov et al, 2008) to reproduce experimental data on the average pre-fission proton and alpha multiplicities for 227 Pa. The dynamical model has been described in detail in our previous papers (Eslamizadeh, 2011b(Eslamizadeh, , 2012b(Eslamizadeh, , 2013.…”

Section: Description Of the Model And Basic Equationsmentioning

confidence: 99%

Study of fusion and fission cross sections and pre-fission particles multiplicities for excited nuclei 227 Pa

Eslamizadeh

Soltani

2015

Annals of Nuclear Energy

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Study of fission dynamics with the three-dimensional Langevin equations

Cited by 22 publications

References 30 publications

Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: ²¹⁰Po, ²¹²Rn, and ²¹³Fr*

Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: ²¹⁰Po, ²¹²Rn, and ²¹³Fr*

Fission fragment distributions within dynamical approach

Study of fusion and fission cross sections and pre-fission particles multiplicities for excited nuclei 227 Pa

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Study of fission dynamics with the three-dimensional Langevin equations

Cited by 22 publications

References 30 publications

Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: 210Po, 212Rn, and 213Fr*

Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: 210Po, 212Rn, and 213Fr*

Fission fragment distributions within dynamical approach

Study of fusion and fission cross sections and pre-fission particles multiplicities for excited nuclei 227 Pa

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Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: ²¹⁰Po, ²¹²Rn, and ²¹³Fr*

Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: ²¹⁰Po, ²¹²Rn, and ²¹³Fr*