Fusion cross sections and barrier distributions for 
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Vijay,; Chahal, Rishi Pal; Gautam, Manjeet Singh; Duhan, Sukhvinder; Khatri, Hitender

doi:10.1103/physrevc.103.024607

Cited by 15 publications

(5 citation statements)

References 72 publications

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“…The concept of distribution of barriers may be fruitful in understanding the ambiguities related to the standard Woods-Saxon potential. In SAGBD model [46][47][48][49], it acquires multidimensional character as simple Wong formula [50] has been weighted by single Gaussian function and the influences of dominant couplings are entering via this weight function in the model calculations.…”

Section: Introductionmentioning

confidence: 99%

“…The SAGBD model has been recently utilized for fusion of 16 O+ 70,72,73,74,76 Ge and 18 O+ 74 Ge systems [47]. Therefore, the current effort is an extension of previous studies that will aid in tracking the role of intrinsic degrees of freedom in the fusion process.…”

Section: Introductionmentioning

confidence: 99%

“…Using the one-dimensional Wong formula [50], the SAGBD model [46][47][48][49] and the coupled channel model [41], theoretical calculations of fusion excitation functions are done for the 12 C+ 92 Zr, 16 O+ 92 Zr, 28 12 C+ 194,198 Pt; 16 O+ 144,148,154 Sm and 17 O+ 144 Sm reactions in the sub-barrier domain. Also, the related barrier distributions data for above mentioned reactions are analyzed by using the SAGBD model.…”

Section: Introductionmentioning

confidence: 99%

“…The impacts ofdistinct types of channel couplings are thought to be involved only at sub-barrier energies, whereassuch physical effectsare very weak atabove-barrier energies. As a result, the above barrier data of fusion reactionsshould be thoroughly examined via 1-DBPM [13,16,22,47]. Newton et al [42] reported that an abnormally larger values of the diffuseness parameter ( = a fm 0.75 0 to fm 1.5 ) of standard Woods-Saxon potential are needed to address the above barrier data for distinct target-projectile pairs.…”

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confidence: 99%

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Comprehensive analysis of heavy-ion fusion reactions around the Coulomb barrier

Gautam¹,

Ghanghas²,

Chahal³

et al. 2022

Phys. Scr.

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We have investigated the fusion dynamics of 12C + 92Zr, 16O + 92Zr, 28Si + 92Zr, 35Cl + 92Zr, 16O + 60Ni, 18O + 58Ni, 12C + 194,198Pt, 16O + 144,148,154Sm and 17O + 144Sm reactions in the close vicinity of the Coulomb barrier. For this purpose, we have opted one-dimensional Wong formula, coupled channel approach, and symmetric-asymmetric Gaussian barrier distribution (SAGBD) model to analyze the fusion data for above mentioned reactions. For all studied systems, the theoretical results obtained from the one-dimensional Wong formula are unable to reproduce the fusion data especially at incident energies lying below the nominal barrier. This appeals for the inclusion of intrinsic degrees of freedom which have been originated from the nuclear structure of fusing nuclei, and thus essentially required to explain the experimental data at energies lying in the sub-barrier realm. For the chosen reactions, the coupled channel analysis suggests that the coupling of relative motion with the inelastic surface excitations and/or nucleon transfer channels associated with the reaction partners have produced a remarkable fusion enhancement at energies lying near and below the nominal barrier. It is particularly intriguing that the SAGBD model can replicate the impacts of dominant intrinsic reaction channels such as multi-phonon quantum states and/or nucleon transfer channels via Gaussian type of weight function. The predictions of the SAGBD approach appropriately reproduce the fusion cross-sections data and related barrier distributions data for the selected reactions due the fact that the multi-dimensional nature induces the barrier lowering effects and subsequently reduces the effective fusion barrier between the participants. In the SAGBD approach, the channel coupling effects are quantitively measured in terms of channel coupling parameter (λ) and percentage decrement in height of effective fusion barrier with respect to the Coulomb barrier (VCBRED ) . Furthermore, the recovered x 2-values for selected reactions are found to be smaller and hence clearly demonstrate the applicability of the model outcomes to explore the fusion dynamics of the studied systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Comprehensive analysis of heavy-ion fusion reactions around the Coulomb barrier

Gautam¹,

Ghanghas²,

Chahal³

et al. 2022

Phys. Scr.

Self Cite

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“…The interaction between heavy ions is simply defined as the interaction of two nuclei moving at a central potential of a short-orbit nuclear interaction and a long-orbit Coulomb repulsive effect [1][2][3]. The fusion reactions of heavy ions have attracted the attention of nuclear physicists, who have subsequently performed theoretical and experimental studies in recent years [4][5][6][7]. This enhancement in attention is owing to the day-by-day increase in heavy-ion accelerator research areas with wide and usable energy intervals.…”

Section: Introductionmentioning

confidence: 99%

Heavy-Ion Fusion Reaction Calculations: Establishing the Theoretical Frameworks for 111In Radionuclide over the Coupled Channel Model

et al. 2021

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In this work, the production of 111In radionuclide has been investigated theoretically via heavy-ion fusion reactions of two stable nuclei: 37Cl+ 74Ge, 26Mg+ 85Rb, 30Si+ 81Br, and 46Ca+ 65Cu reactions. Fusion cross-sections, barrier distributions, and potential energies on mutual orientations in the reactions planes of all reactions have been researched in detail around the barrier region via a coupled channel (CC) model using different codes. First of all, the most suitable codes and calculation parameter sets were determined through the 37Cl+ 74Ge reaction, whose experimental data were available. The compatibility of the calculations via NRV knowledge base, CCFULL, CCDEF codes, and Wong’s formula with experimental data was analyzed. Barrier distributions and cross-sections for heavy-ion fusion reactions have been investigated with miscellaneous codes and vibrational-rotational nuclei combinations for interacting nuclei. Afterward, calculations were made with the determined parameter values for new reaction suggestions (26Mg+ 85Rb, 30Si+ 81Br, and 46Ca+ 65Cu reactions) and the results were compared. This study aims to suggest the new reaction combinations for the production of 111In radionuclide, to explore the impacts of different calculation codes and nuclear parameter combinations on the heavy-ion fusion cross-sections and barrier distributions, to demonstrate that the results are reliable, and to emphasize the importance of developing these studies in the preparation of new experiments.

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