Effects of transfer channels on near- and sub-barrier fusion of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn mathvariant="bold">32</mml:mn></mml:msup></mml:math>S<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>+</mml:mo></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn mathvariant="bold">48</mml:mn></mml:msup></mml:math>Ca

Montagnoli, G.; Stefanini, A. M.; Esbensen, H.; Jiang, C. L.; Corradi, L.; Courtin, S.; Fioretto, E.; Goasduff, A.; Grȩbosz, J.; Haas, F.; Mazzocco, M.; Michelagnoli, C.; Mijatović, T.; Montanari, D.; Parascandolo, C.; Rehm, K. E.; Scarlassara, F.; Szilner, S.; Tang, Xiaodong; Ur, C. A.

doi:10.1103/physrevc.87.014611

Cited by 62 publications

(52 citation statements)

References 37 publications

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“…In addition, according to the calculations to be presented in the next section, the direct transfer of a few nucleons cannot explain those dissipative events for the same reason. Their transfer cross sections have been calculated by a large-scale coupled-channel calculation, which includes the 1n-, 2n-, 2p-, 3 He-, and 4 He-transfer processes between high-lying states of 48 Ca and 120 Sn. So, as was performed in Ref.…”

Section: Experimental Details and Resultsmentioning

confidence: 99%

“…In the case of multinucleon transfer, the cluster model was used. The wave function of the cluster was obtained by a superposition of the single-particle wave function to form a cluster with spin zero (except for the 3 He transfer where its ground-state spin was used). As there is no available spectroscopic amplitude information for all included overlaps, we assumed the value of 1.0.…”

Section: B Coupling Of Transfer Channelsmentioning

confidence: 99%

“…The double-magic 48 Ca nucleus has largely been used in nuclear reactions with the aim of synthesizing superheavy elements [1,2] and to study neutron transfer reactions over a large number of systems [2][3][4][5][6]. This is a very suitable nucleus for these kinds of investigations since it has a large number of neutrons, and so its external eight neutrons that close the rather diffuse 1f 7/2 orbital seem to enhance these two kinds of processes.…”

Section: Introductionmentioning

confidence: 99%

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Quasi-elastic processes of the48Ca + 120Sn system and the48Ca nuclear matter density

Crema¹,

Álvarez²,

Medina³

et al. 2013

Phys. Rev. C

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We present the results of a high-precision quasi-elastic excitation function measurement for the 48 Ca + 120 Sn system at θ LAB = 160• at near-barrier energies in steps of 1.0 MeV. The corresponding quasi-elastic barrier distribution is derived. A large-scale coupled-channel calculation was performed to investigate the role of several reaction channels in the reaction mechanism. An excellent agreement between theory and data was obtained for the barrier distribution. The first quadrupole vibrations of the 48 Ca and 120 Sn, the 2n, and the 4 He transfers have a strong influence on the reaction mechanism and are responsible for the good agreement achieved. The 1n transfer has a minor importance in the result when compared with the 2n transfer, which suggests that the pairing correlation might play an important role in the 2n-neutron transfer process. However, if the octupole vibration of the projectile is included in the coupling scheme, the agreement with the data gets worse. The comparison of the coupled-channel calculations with experimental data leads to the conclusion that the nuclear matter diffuseness of the 48 Ca nucleus is 0.56 fm in agreement with most of the double-magic nuclei.

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Section: Experimental Details and Resultsmentioning

confidence: 99%

Section: B Coupling Of Transfer Channelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quasi-elastic processes of the48Ca + 120Sn system and the48Ca nuclear matter density

Crema¹,

Álvarez²,

Medina³

et al. 2013

Phys. Rev. C

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show abstract

“…The influence of transfer on fusion was noticed in systems having a positive Q-value for neutron transfer channels [3][4][5][6][7][8][9]. However, in few recent work, in spite of positive Q-values, no effect of the transfer channel on fusion enhancement was observed [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Influence of neutron transfer channels on fusion enhancement in sub-barrier region

et al. 2017

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Abstract. Fusion cross-section measurements were performed for system 40 Ca + 70 Zn around the Coulomb barrier energies using Heavy Ion Reaction Analyzer (HIRA). The observed enhancement in experimental fusion cross-sections was investigated via coupled-channels formalism. The coupling of inelastic excitations alone could not reproduce the experimental data, however, the effect of octupole state of the projectile was observed to be significant. The multi-neutron positive Q-value transfer channels were also included in the calculations using semi-classical model. It was observed that two neutrons pick-up channel gave a major contribution to the fusion enhancement and successfully reproduce the experimental data at above as well as below barrier energies. The coupling of more than two neutrons transfer could not give any significant enhancement to subbarrier fusion.

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“…Nucleon transfer channels have also been shown to affect the fusion process [15][16][17][18][19]. However, a deep understanding of the interplay between fusion and transfer is still needed.…”

Section: Introductionmentioning

confidence: 99%

Microscopic study ofCa40+Ni58,64fusion reactions

et al. 2016

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Background: Heavy-ion fusion reactions at energies near the Coulomb barrier are influenced by couplings between the relative motion and nuclear intrinsic degrees of freedom of the colliding nuclei. The time-dependent Hartree-Fock (TDHF) theory, incorporating the couplings at the meanfield level, as well as the coupled-channels (CC) method are standard approaches to describe low energy nuclear reactions. Purpose: To investigate the effect of couplings to inelastic and transfer channels on the fusion cross sections for the reactions 40 Ca+ 58 Ni and 40 Ca+ 64 Ni. Methods: Fusion cross sections around and below the Coulomb barrier have been obtained from coupled-channels (CC) calculations, using the bare nucleus-nucleus potential calculated with the frozen Hartree-Fock method and coupling parameters taken from known nuclear structure data. The fusion thresholds and neutron transfer probabilities have been calculated with the TDHF method.

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Effects of transfer channels on near- and sub-barrier fusion of32S+48Ca

Cited by 62 publications

References 37 publications

Quasi-elastic processes of the48Ca + 120Sn system and the48Ca nuclear matter density

Quasi-elastic processes of the48Ca + 120Sn system and the48Ca nuclear matter density

Influence of neutron transfer channels on fusion enhancement in sub-barrier region

Microscopic study ofCa40+Ni58,64fusion reactions

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