Optimum orientations for octupole deformed nuclei in fusion configurations

Jain, S. C.; Sharma, Manoj K.; Kumar, Raj

doi:10.1103/physrevc.101.051601

Cited by 9 publications

(2 citation statements)

References 39 publications

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“…On the other hand, for the orthogonal symmetry axes orientation, at 90°, commonly referred to as the belly-to-belly or equator-cross configuration, it has been established that this arrangement, recognized as the most compact, effectively characterizes the hot fusion reactions [18]. The optimal orientations have been investigated considering different deformation components, including the octupole deformation (β 3 ), for both the 'cold' or non-compact and 'hot' or compact fusion configurations [19,20]. The inclusion of octupole deformation, which causes distortions in spherically symmetric or quadrupole-deformed (β 2 ) nuclei resulting in pear-shaped configurations, greatly alters the optimal orientations compared to those obtained for β 2 -deformed nuclei.…”

Section: Introductionmentioning

confidence: 99%

Signatures of elongated and compact configurations in the fusion barrier distribution of deformed nuclei

Fareed,

Seif,

Adel

et al. 2023

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

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The fusion barrier distributions of 11 fusion reactions are investigated to understand the role of orientation as a degree of freedom in the fusion mechanism involving deformed nuclei, and seeking signatures of cold and hot fusion. We compared the experimentally extracted barrier distributions (BD) with those calculated using the coupled-channel method, starting from orientation-dependent folding potentials based on M3Y-Reid nucleon-nucleon interaction, with coupling to the anticipated vibrational and rotational excitations in projectile and target nuclei. We found that the signature of the hot fusion process within the compact configuration of the participating deformed nuclei is always evident in the extracted fusion barrier distribution. The different peaks appearing in the extracted BD can be individually assigned to elongated-cold or compact-hot fusion process. The imprint of the compact-hot fusion may also manifest itself as a little increase in the value of the BD at certain related energy, compared with the preceding and succeeding values. 

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Section: Introductionmentioning

confidence: 99%

Signatures of elongated and compact configurations in the fusion barrier distribution of deformed nuclei

Fareed,

Seif,

Adel

et al. 2023

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

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“…However, the exploration of octupole deformed nuclei is important for extracting the appropriate nuclear structure because significant enhancements can be found in electric dipole moments (EDMs) [27]. Also, in the nuclear fusion process, it has been observed that [35] the nonzero EDMs in one of the fusion partners ( 16 O+ 144 Ba and 224 Ra) may have a significant impact on the fusion barrier and corresponding cross-sections.…”

Section: Introductionmentioning

confidence: 99%

Fusion of spherical-octupole pairs of colliding nuclei for compact and elongated configurations *

Jain¹,

Sharma²,

Kumar³

2022

Chinese Phys. C

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The deformation and associated optimum/uniquely fixed orientations play an important role in the synthesis of compound nuclei via cold and hot fusion reactions, respectively, at the lowest and highest barrier energies. The choice of optimum orientation ( ) for the ‘cold or elongated’ and ‘hot or compact’ fusion configurations of quadrupole ( ) deformed nuclei depends only on the +/- signs of -deformation [J. Phys. G: Nucl. Part. Phys. 31, 631-644 (2005)]. In our recent study [Phys. Rev. C 101, 051601(R) 2020], we proposed a new set of (different from the values reported for quadrupole deformed nuclei) after the inclusion of octupole deformation (up to ) effects. Using the respective of -deformed nuclei for cold and hot optimum orientations, we analyzed the impact of the soft- and rigid-pear shapes of octupole deformed nuclei on the fusion barrier characteristics (barrier height and barrier position ). This analysis is applied to approximately 200 spherical-plus- deformed nuclear partners, that is, 16O, 48Ca+octupole deformed nuclei. Compared with the compact configuration, the elongated fusion configuration has a relatively larger impact on the fusion barrier and cross-sections owing to the inclusion of deformations up to . Its agreement with available experimental data for the 16O+150Sm reaction ( =0.205, =-0.055) also improves when the optimum orientation degree of freedom is fixed in view of octupole deformations. This reinforces the fact that nuclear structure effects play an important role in the nuclear fusion process. Thus, octupole deformed nuclei can be used for the synthesis of heavy and superheavy nuclei.

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Systematic study of probable target-projectile combinations for the synthesis of Z = 120 isotopes using the Skyrme energy density formalism

Kaur¹,

Sharma²,

Kumar³

2022

Nuclear Physics A

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Optimum orientations for octupole deformed nuclei in fusion configurations

Cited by 9 publications

References 39 publications

Signatures of elongated and compact configurations in the fusion barrier distribution of deformed nuclei

Signatures of elongated and compact configurations in the fusion barrier distribution of deformed nuclei

Fusion of spherical-octupole pairs of colliding nuclei for compact and elongated configurations *

Systematic study of probable target-projectile combinations for the synthesis of Z = 120 isotopes using the Skyrme energy density formalism

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