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Rossner, H.; Hinde, David; Leigh, J.R.; Lestone, J. P.; Newton, J.O.; Jiang, Wei; Elfström, S.

doi:10.1103/physrevc.45.719

Cited by 85 publications

(43 citation statements)

References 35 publications

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“…The calculation is done at a number of incident energies in the range of 80 MeV to 140 MeV using both the WF and the CWWF dissipations. Figure 2 shows the calculated prescission neutron multiplicity along with the experimental data [15]. Both the WF and CWWF predictions for multiplicity are quite close to the experimental values and this shows that neutron multiplicity is not very sensitive to the dissipation in fission in the energy range under consideration.…”

Section: Resultsmentioning

confidence: 58%

“…Calculation will be performed at a number of excitation energies for 224 Th formed in the 16 O+ 208 Pb system. We have chosen this system essentially because of the availability of experimental data on both evaporation residue and prescission neutron multiplicity covering the same range of excitation energies and the fact that earlier analyses of the evaporation residue excitation function have already indicated the need for a dynamical model for fission of this nucleus [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Evaporation residue cross-sections as a probe for nuclear dissipation in the fission channel of a hot rotating nucleus

Chaudhuri

Pal

2003

Eur. Phys. J. A

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Evaporation residue cross-sections are calculated in a dynamical description of nuclear fission in the framework of the Langevin equation coupled with statistical evaporation of light particles. A theoretical model of one-body nuclear friction which was developed earlier, namely the chaosweighted wall formula, is used in this calculation for the 224 Th nucleus. The evaporation residue cross-section is found to be very sensitive to the choice of nuclear friction. The present results indicate that the chaotic nature of the single-particle dynamics within the nuclear volume may provide an explanation for the strong shape-dependence of nuclear friction which is usually required to fit experimental data.

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Section: Resultsmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Evaporation residue cross-sections as a probe for nuclear dissipation in the fission channel of a hot rotating nucleus

Chaudhuri

Pal

2003

Eur. Phys. J. A

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“…Several explanations [-2] have been advanced to understand the above mentioned discrepancy. Recently, Rossner et al [3] have investigated the effects due to pre-fission neutron emission in the calculation of fission angular distributions for the system 260 + 2~ With this approach they were able to calculate anisotropy values at near barrier energies close to the data.…”

Section: Introductionmentioning

confidence: 93%

Influence of pre-fission neutron emission on fission fragment angular distribution for the system209Bi +16O

Kailas

Singh

1994

Z. Physik A - Hadrons and Nuclei

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Abstract. The data of fission fragment anisotropies measured for the system 160+2~ in the centre of mass energy region of 73 to 95 MeV have been compared with the saddle point statistical model calculations. The corrections to the nuclear temperature and the spin distribution arising due to pre-fission neutron emission have been made. While the resultant calculations reproduce very well the data in the near-and sub-barrier energy regions, they deviate from the data at higher energies. This observation is similar to what was already reported for 160 + 2~ system.

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“…Moreover, in the contest of nuclear power production, neutron multiplicity plays the pivotal role in the operation of nuclear reactors. Considerable efforts has been devoted to measure the neutron multiplicity experimentally over a wide varieties of target-projectile combinations [7,[17][18][19][20][21][22][23][24]. However, theoretical refinements in the estimation of particle multiplicities has not been practiced much since it is first proposed in the seminal work by Weisskopf [25].…”

Section: Introductionmentioning

confidence: 99%

Role of dynamical deformation in pre-scission neutron multiplicity

et al. 2017

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The light-particle emission probability from an excited compound nucleus depends explicitly on the time-evolution of the system as the available internal excitation energy and, consequently, the particle decay widths depend on the instantaneous deformation of the nucleus. The Langevin dynamical model for fission is employed to extract this deformation dependence in pre-scission particle multiplicities by following the propagation of fissioning trajectories up to scission. The variation of particle decay widths with nuclear deformation is accounted more precisely in comparison to the existing calculations. The number of neutrons emitted from different configurations of the compound nucleus are calculated for a detailed analysis. The deformation dependence of particle emission widths is found to be relevant for highly fissile systems where the dynamics is primarily governed by the saddle to scission motion. This dynamical effect essentially predicts the nuclear shape evolution through evaporated light particles and, for a heavy compound system, simultaneous measurement of neutron multiplicities for fission and evaporation residue events can reveal its intricate nature. PACS numbers: 24.10. 25.70.Gh, 27.90.+b

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Influence of pre-fission particle emission on fragment angular distributions studied forPb208(

Cited by 85 publications

References 35 publications

Evaporation residue cross-sections as a probe for nuclear dissipation in the fission channel of a hot rotating nucleus

Evaporation residue cross-sections as a probe for nuclear dissipation in the fission channel of a hot rotating nucleus

Influence of pre-fission neutron emission on fission fragment angular distribution for the system209Bi +16O

Role of dynamical deformation in pre-scission neutron multiplicity

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