Entrance channel effect in the incomplete fusion reactions

Yadav, Abhishek; Sharma, Vijay R.; Singh, Pushpendra P.; Sharma, Manoj K.; Singh, Devendra P.; Unnati,; Kumar, R.; Singh, B. P.; Prasad, R.; Bhowmik, R. K.

doi:10.1051/epjconf/20111716019

Cited by 3 publications

(4 citation statements)

References 14 publications

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“…In the description of γ-ray competitions, emission of E 1 , E 2 , M 1 and M 2 γrays are involved and γ-ray strength for different transitions, are taken from the systematic default values. The γ-decay intensities in Weiss Kopf units were 0.000080, 0.025000, 4.800000, and 0.019500 for E 1 , M 1 , E 2 , and M 2 , respectively [4,13].…”

Section: Computer Code and Formulationmentioning

confidence: 99%

“…At each stage, angular momentum conservation is explicitly considered. for any particular bombarding energy the partial cross-section for CN formation at angular momentum is given by [13],…”

Section: Computer Code and Formulationmentioning

confidence: 99%

“…In PACE4 code the level density parameter a, which largely affects the equilibrium state components of crosssection is calculated from the expression a = A/K MeV -1 , where A is the nucleon number of a compound system and K is an adjustable constant, which may be varied to match the experimental data. The experimentally measured EFs were compared with PACE4 predictions for various level density parameter values for representative ERs in the 12 C+ 169 Tm, 16 O+ 169 Tm and 16 O+ 71 As systems produced only via the CF processes [13,15].…”

Section: Computer Code and Formulationmentioning

confidence: 99%

“…Abhishek et al, [13] investigated the effect of entrance channel characteristics in the partial fusion of 12 C + 159 Tb at energies ranging from 4 to 7 MeV/nucleon. According to the findings, the incomplete fusion fraction is a measure of the relative strength of the incomplete fusion contribution to overall fusion.…”

Section: Introductionmentioning

confidence: 99%

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Projectile Energy and Entrance Channel Mass-Asymmetry Effects on Incomplete Fusion of 12C + 169Tm, 16O + 169Tm and 16O + 75 As Systems at 4 — 7.5 MeV/Nucleon Energy Beam

Kebede

2023

Preprint

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This study focus on the correlation between entrance channel properties and incomplete fusion reaction. The dynamics of heavy-ion fusion reactions involved in the interaction of 12C and 16O with 169Tm and 75 As targets were examined at 3 — 8 MeV/Nucleon specific energies. The influence of projectile energy and entrance channel mass-asymmetry on the incomplete fusion process in the interaction of 12C + 169Tm, 16O + 169Tm and 16O + 75 As systems at energies ranging from 4 — 7.5 MeV/Nucleon was examined in this study. The PACE4 statistical model was used to compare and analyze the measured cross sections from the EXFOR data base. The values of level density parameter, which is a sensitive input parameter, were optimized using a representative non-a-emitting channel from the respective systems. The experimentally measured excitation functions for representative non α-emitting channels were found to be in good agreement with the theoretical predictions in general. However, for α-emitting channels in the current systems, the measured excitation functions were greater than the theoretical model code predictions, which could be attributed to incomplete fusion reaction at these energies. The observed enhancements in α-emitting channels were attributable to the contribution coming from incomplete fusion reactions. The incomplete fusion fraction, which explains the relative relevance of incomplete fusion processes, was attempted to be approximated. The incomplete fusion fraction was shown to be sensitive to the projectile energy and mass-asymmetry of the entrance channel. Further, the results showed that incomplete fusion reactions were higher for more mass-asymmetric systems than mass-symmetric one.

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Section: Computer Code and Formulationmentioning

confidence: 99%

Section: Computer Code and Formulationmentioning

confidence: 99%

Section: Computer Code and Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Projectile Energy and Entrance Channel Mass-Asymmetry Effects on Incomplete Fusion of 12C + 169Tm, 16O + 169Tm and 16O + 75 As Systems at 4 — 7.5 MeV/Nucleon Energy Beam

Kebede

2023

Preprint

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Effect of entrance-channel parameters on incomplete fusion reactions

et al. 2012

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An attempt has been made to have exclusive information on effect of various entrance channel parameters on the onset of incomplete fusion in heavy ion induced reactions at energies at 4-7 MeV/A. A number of experiments have been performed by our group to measure the excitation function and forward recoil range distribution of various evaporation residues populated via complete fusion and/or incomplete fusion of 16 O with different targets. The experimental excitation functions have been analysed in the frame work of compound nucleus decay using statistical model code PACE-4. Analysis of data suggests the existance of incomplete fusion even at energies as low as near barrier energies where complete fusion is supposed to be the sole contributor. Further more, in order to understand incomlete fusion reactions in a more conclusive way, the incomplete fusion fraction has been analyzed with the existing data for α-cluster projectiles with different targets of low, medium and heavy mass region. The study of percentage incomplete fusion fraction for different projectile target combinations deduced from experimentally measured excitation functions of individual reaction product shows strong dependence on projectile energy, mass asymmetry of interacting partners and α − Q value of the projectile.

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