Evaporation residue excitation function measurements in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Ti</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>50</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>- and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Cr</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>54</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>-induced reacti

Mayorov, D.; Werke, T. A.; Alfonso, Marisa; Tereshatov, E. E.; Bennett, Megan; Frey, M. M.; Folden, C. M.

doi:10.1103/physrevc.92.054601

Cited by 22 publications

(8 citation statements)

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“…A significant role of collective enhancement of level density (CELD) in reproducing the mass distribution from fragmentation of heavy nuclei was observed by Junghans et al [22]. CELD is also found to be important for calculating the survival probability of super-heavy nuclei [14,15]. Evidence of CELD has also been found in the spectrum of evaporated neutrons from deformed compound nuclei [23].…”

Section: Description Of Model and Resultsmentioning

confidence: 88%

“…We also include the effect of nuclear dissipation on fission width. Different combinations of the above effects have been considered by many authors in the past for statistical model analysis of fusion-fission reactions [7,[12][13][14]. All the four effects have been included in the statistical model analysis of pre-scission and post-scission multiplicity by Yanez et al [15].…”

Section: Introductionmentioning

confidence: 99%

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Quest for consistent modelling of statistical decay of the compound nucleus

2018

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A statistical model description of heavy ion induced fusion-fission reactions is presented where shell effects, collective enhancement of level density, tilting away effect of compound nuclear spin and dissipation are included. It is shown that the inclusion of all these effects provides a consistent picture of fission where fission hindrance is required to explain the experimental values of both pre-scission neutron multiplicities and evaporation residue cross-sections in contrast to some of the earlier works where a fission hindrance is required for pre-scission neutrons but a fission enhancement for evaporation residue cross-sections. * Electronic address: he.tatha@gmail.com

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Section: Description Of Model and Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Quest for consistent modelling of statistical decay of the compound nucleus

2018

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“…We also performed the model calculations for the 50 Ti+ 160 Gd [34] reaction for which 4n+5n channel cross sections are known. This reaction also populates 210 Rn as the CN (Fig.…”

Section: Resultsmentioning

confidence: 99%

Probing Quasifission In Reactions Forming Rn Nucleus

Shamlath¹,

Prasad²,

Madhavan³

et al. 2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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We studied the competition between fusion and quasifission by populating the compound nucleus (CN) 210 Rn through different entrance channels - 16 O+ 194 Pt and 30 Si+ 180 Hf, at energies around the Coulomb barrier. The larger widths of the fission fragment mass distribution in the 30 Si+ 180 Hf reaction which could not be explained by using transition state models, indicated the onset of quasifission in this reaction. Further, the evaporation residues (ERs) produced in these reactions were measured using the gas-filled recoil mass separator HYRA at IUAC. The measurements showed reduced ER cross sections for the 30 Si+ 180 Hf reaction when compared with that of 16 O+ 194 Pt at similar excitation energies, confirming the presence of quasifission in the 30 Si+ 180 Hf reaction. The experimental results are analysed using the dinuclear system (DNS) and statistical models to understand the possible influence of potential energy surfaces (PES) and different entrance channel conditions in heavy ion fusion reactions.

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“…It has been observed in earlier works that the inclusion of CELD is important for explaining the mass distribution of fragmented heavy nuclei [33], the survival probability of heavy and super-heavy nuclei [34,35] and the spectrum of evaporated neutrons from deformed CN [36]. We therefore include CELD in the present calculations.…”

Section: Statistical Model Calculationsmentioning

confidence: 99%

Measurement of fission excitation function for ¹⁹F + ^{194, 196, 198}Pt reactions

Singh¹,

Behera²,

Kaur³

et al. 2021

J. Phys. G: Nucl. Part. Phys.

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Experimental fission cross-sections are reported for the 19F + 194,196,198Pt reactions populating an isotopic chain of compound nuclei comprising both closed and non-closed shell nuclei. The fission cross-sections are obtained at near and above Coulomb barrier energies by measuring fission fragment angular distributions. The present work aims to estimate nuclear dissipation and find its isotopic and shell closure dependence from statistical model (SM) analysis of experimental data. Pre-scission neutron multiplicity data for the same systems is also included in the SM analysis. An updated version of SM is used in the present analysis, which includes shell corrections in level density and fission barrier as well as the effect of collective enhancement of level density and orientation effect of the compound nucleus along the symmetry axis. An isotopic dependence of the dissipation strength fitting the fission excitation functions is observed. The pre-scission neutron multiplicity, however, is underestimated by the SM.

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Evaporation residue excitation function measurements inTi50- andCr54-induced reacti

Abstract: Cross sections for the production of shell-stabilized evaporation residues in the 50

Cited by 22 publications

References 50 publications

Quest for consistent modelling of statistical decay of the compound nucleus

Quest for consistent modelling of statistical decay of the compound nucleus

Probing Quasifission In Reactions Forming Rn Nucleus

Measurement of fission excitation function for ¹⁹F + ^{194, 196, 198}Pt reactions

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Evaporation residue excitation function measurements inTi50- andCr54-induced reacti

Abstract: Cross sections for the production of shell-stabilized evaporation residues in the 50

Cited by 22 publications

References 50 publications

Quest for consistent modelling of statistical decay of the compound nucleus

Quest for consistent modelling of statistical decay of the compound nucleus

Probing Quasifission In Reactions Forming Rn Nucleus

Measurement of fission excitation function for 19F + 194, 196, 198Pt reactions

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Measurement of fission excitation function for ¹⁹F + ^{194, 196, 198}Pt reactions