Reaction dynamics of exotic and stable weakly-bound nuclei using a four-body continuum-discretized coupled-channels formalism

EPJ Web of Conferences ◽

10.1051/epjconf/202125204004 ◽

2021 ◽

Vol 252 ◽

pp. 04004

Author(s):

Manuela Rodríguez-Gallardo ◽

Jesús Casal

Keyword(s):

Coulomb Barrier ◽

Reaction Dynamics ◽

Halo Nuclei ◽

Lead Target ◽

Weakly Bound ◽

Stable Nucleus ◽

Coupled Channels

Reactions induced by four weakly-bound nuclei on a lead target, at energies around the Coulomb barrier, are described using the same four-body continuum-discretized coupled-channels formalism. The nuclei considered are the halo nuclei 11Li and 6He, the stable nucleus 9Be and the proton-rich nucleus 10C. The diﬀerences and similarities on the reaction dynamics are addressed.

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7Be and 8B reaction dynamics at Coulomb barrier energies

EPJ Web of Conferences ◽

10.1051/epjconf/201818402015 ◽

2018 ◽

Vol 184 ◽

pp. 02015

Author(s):

E. Strano ◽

M. Mazzocco ◽

A. Boiano ◽

C. Boiano ◽

M. La Commara ◽

...

Keyword(s):

Cross Sections ◽

Coulomb Barrier ◽

Reaction Cross Section ◽

Optical Model ◽

Reaction Dynamics ◽

Reaction Cross ◽

Total Reaction Cross Section ◽

Weakly Bound ◽

Total Reaction ◽

Reaction Cross Sections

We investigated the reaction dynamics induced by the 7Be,8B+208Pb collisions at energies around the Coulomb barrier. Charged particles originated by both the col- lisions were detected by means of 6 ΔE-Eres telescopes of a newly developed detector array. Experimental data were analysed within the framework of the Optical Model and the total reaction cross-sections were compared together and with the 6,7Li+208Pb colli-sion data. According to the preliminary results, 7Be nucleus reactivity is rather similar to the 7Li one whereas the 8B+208Pb total reaction cross section appears to be much larger than those measured for reactions induced by the other weakly-bound projectiles on the same target.

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RADIAL SENSITIVITY OF THE ELASTIC SCATTERING AROUND THE COULOMB BARRIER ENERGIES FOR WEAKLY-BOUND AND HALO NUCLEI

Modern Physics Letters A ◽

10.1142/s0217732312501180 ◽

2012 ◽

Vol 27 (21) ◽

pp. 1250118

Author(s):

Y. SERT ◽

T. CANER ◽

O. BAYRAK ◽

I. BOZTOSUN

Keyword(s):

Elastic Scattering ◽

Cross Section ◽

Coulomb Barrier ◽

Optical Potential ◽

Theoretical Calculations ◽

Fusion Cross Section ◽

Halo Nuclei ◽

Weakly Bound ◽

Medium Mass ◽

Good Agreement

The radial sensitivity of the elastic scattering of the weakly-bound 6 Li and halo 6 He nuclei on medium-mass 64 Zn target and heavy target 208 Pb is examined around the Coulomb barrier energies. We present that very good agreement between theoretical and experimental results have been obtained with small χ2/N values. The fusion cross-section and volume integrals of the potentials have been deduced from the theoretical calculations for all studied systems at relevant energies. We have also analyzed the elastic scattering of the 6 He +208 Pb system at E lab = 14, 16, 18, 22, 27 MeV in order to investigate whether there is a dispersion relation between the real and imaginary parts of the optical potential.

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FOUR-BODY CONTINUUM-DISCRETIZED COUPLED-CHANNEL CALCULATIONS APPLIED TO 6He REACTIONS AROUND THE COULOMB BARRIER

International Journal of Modern Physics E ◽

10.1142/s0218301311019039 ◽

2011 ◽

Vol 20 (04) ◽

pp. 947-952 ◽

Cited By ~ 5

Author(s):

M. RODRÍGUEZ-GALLARDO ◽

A. M. MORO

Keyword(s):

Harmonic Oscillator ◽

Cross Section ◽

Coulomb Barrier ◽

Elastic Cross Section ◽

Body System ◽

Weakly Bound ◽

Discretization Methods ◽

Coupled Channels ◽

Three Body ◽

Coupled Channel

The scattering of a weakly bound three-body system by a target is studied within the four-body continuum-discretized coupled-channels (4b-CDCC) framework. Two different methods, the transformed harmonic oscillator (THO) method and the binning procedure, are used for discretizing the three-body continuum. The formalism is applied to different reactions induced by the Borromean nucleus 6 He at energies around the Coulomb barrier: 6 He +64 Zn at 13.6 MeV, 6 He +120 Sn at 17.4 MeV, and 6 He +208 Pb at 22 MeV. Elastic cross section distributions are presented for these reactions comparing both discretization methods, THO and binning, as the mass of the target increases.

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Reaction Dynamics of Weakly-Bound Few-Body Nuclei at Energies Around the Coulomb Barrier

Few-Body Systems ◽

10.1007/s00601-015-1028-2 ◽

2015 ◽

Vol 57 (3) ◽

pp. 177-184 ◽

Cited By ~ 4

Author(s):

Maddalena Boselli ◽

Alexis Diaz-Torres

Keyword(s):

Coulomb Barrier ◽

Reaction Dynamics ◽

Weakly Bound

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REACTION MECHANISMS IN COLLISIONS INDUCED BY HALO NUCLEI AROUND THE COULOMB BARRIER

International Journal of Modern Physics E ◽

10.1142/s0218301311018988 ◽

2011 ◽

Vol 20 (04) ◽

pp. 923-928

Author(s):

PIERPAOLO FIGUERA

Keyword(s):

Cross Section ◽

Coulomb Barrier ◽

Reaction Dynamics ◽

Fusion Cross Section ◽

Reaction Cross ◽

Halo Nuclei ◽

Total Reaction Cross Section ◽

Complete Agreement ◽

Halo Structure ◽

Direct Reactions

The peculiar structure of the halo nuclei is expected to strongly influence the reaction dynamics at energies around the Coulomb barrier . In this paper we will summarize the main experimental results obtained by different authors on the above topic. Our recent results concerning the study of the collisions 9,10,11 Be +64 Zn and 4,6 He +64 Zn will be discussed more in detail. It is observed that the total reaction cross section with halo nuclei is dominated by direct reactions. A complete agreement on the effects of the halo structure on the fusion cross section is not yet reached by different authors.

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Low energy reactions of halo nuclei

EPJ Web of Conferences ◽

10.1051/epjconf/202125204003 ◽

2021 ◽

Vol 252 ◽

pp. 04003

Author(s):

Ismael Martel

Keyword(s):

Coulomb Barrier ◽

Reaction Mechanisms ◽

Halo Nucleus ◽

Low Energy ◽

Halo Nuclei ◽

Direct Reaction ◽

Neutron Halo ◽

Weakly Bound ◽

The Core ◽

Nuclear Core

Halo nuclei are extreme nuclear states consisting of one or more weakly-bound valence nucleons spatially decoupled from a tightly bound nuclear core. The weakly bound nature of the halo dominates the reaction probability, but the specific reaction mechanisms depend also on the core and target nuclei. Despite of the inherent complexity of the reaction process, simple two-body models and direct reaction theories can be used to extract useful information of the structure of the halo nucleus and its dynamics. These ideas are discussed using selected experiments of Coulomb barrier reactions with one- and two- neutron halo systems.

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