The role of breakup in near-barrier 6Li+208Pb scattering

Keeley, N.; Rusek, K.

doi:10.1016/0370-2693(96)00263-8

Cited by 26 publications

(16 citation statements)

References 31 publications

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“…Applications to the breakup of 6 Li and 6 He include Refs. [8][9][10][11][12] and results compare well with the data. One-neutron halo nuclei such as 11 Be and 15 C have also been studied within CDCC [13][14][15] and in most cases a good description of the data is found.…”

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confidence: 71%

The effects of core excitation in the breakup of exotic nuclei

Summers¹,

Nunes²,

Thompson³

2007

Nuclear Physics A

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Breakup of exotic nuclei is discussed within the context of the recently developed XCDCC (eXtended Continuum Discretized Coupled Channel) model. The method is applied to the breakup of 11 Be into 10 Be+n + γ on a 9 Be target. Interference between the multi-configurations of the projectile is observed as well as dynamical excitation of the core through the interaction with the target. MotivationThe exciting era introduced by the new radioactive beam facilities worldwide has pushed nuclear reaction theory to its limits of applicability [1,2]. Although significant progress has been achieved over the last decade, it is clear that nuclear reaction models are still lagging behind given the detail and quality of some coincidence measurements now available [3][4][5][6].Breakup reactions are frequently measured to provide structure information of the projectile, some of which hold relevance to astrophysics. When considering breakup of loosely bound core+N systems, one can describe the reaction process within a three body model, where the continuum is discretized in some way [7]. The coordinates used in such a model are represented in Fig. 1. If couplings are to be taken into account to all orders, one needs to solve the Continuum Discretized Coupled Channel (CDCC) Equation [7].In the past decade, the CDCC method has been applied to a very large number of reactions measured with radioactive beams, to help in the extraction of the desired structure information. Applications to the breakup of 6 Li and 6 He include Refs. [8][9][10][11][12] and results compare well with the data. One-neutron halo nuclei such as 11 Be and 15 C have also been studied within CDCC [13][14][15] and in most cases a good description of the data is found. Different targets and energy regimes have been used to study the breakup of the proton halo 8 B most of which have been analysed under the CDCC model [16][17][18][19][20][21].A new technique to explore the low lying continuum states of dripline nuclei (or nuclei beyond the dripline) involves transfer to the continuum. For example, to study states in the unbound system of 10 Li, which bares important information for the behaviour of the Borromean halo nucleus 11 Li, the (d,p) reaction is used on 9 Li, in inverse kinematics [23]. The final state in this transfer process can also be described within CDCC and applications *

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confidence: 71%

The effects of core excitation in the breakup of exotic nuclei

Summers¹,

Nunes²,

Thompson³

2007

Nuclear Physics A

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“…Thus, one cannot know if the absorption by one of these potentials contributes to ICF or to CF. Consequently, the calculation gives only the summed cross section for these processes, σ TF [11]. This shortcoming is avoided in the CDCC calculations of Hagino et al [7] and Diaz-Torres and Thompson [8].…”

Section: Introductionmentioning

confidence: 99%

Complete and incomplete fusion of weakly bound nuclei

Marta¹,

Canto

Donangelo

2014

Phys. Rev. C

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Existing quantum mechanics methods to study fusion reactions with weakly bound nuclei cannot evaluate separately the complete fusion and the incomplete fusion cross sections. We develop a semiclassical procedure that can calculate these cross sections, apply it to 6,7 Li + 209 Bi collisions at energies just above the barrier, and show that its predictions for the different fusion cross sections are in good agreement with the data. We find that the contribution from the sequential fusion of the Li fragments to the complete fusion cross section is substantial in the case of 6 Li, reaching almost 40% of that from the direct process, which illustrates the importance of calculating correctly the different components of the fusion cross section.

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“…Earlier findings give the dominant role to breakup (see, e.g., Refs. [15,16]), while now this role is also given to transfer [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Strong transfer channels in theLi6+Si28system at near-barrier energies

et al. 2007

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Exclusive α-particle and proton production measurements of the system 6 Li+ 28 Si are performed at near-barrier energies. Each reaction channel is tagged via a particle-γ coincidence requirement. Ratios of direct to compound contributions are estimated via particle angular distribution measurements. Strong reaction channels for n and p transfer are identified and quantified and found to be described well on a qualitative basis with distorted-wave Born approximation calculations.

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The role of breakup in near-barrier 6Li+208Pb scattering

Cited by 26 publications

References 31 publications

The effects of core excitation in the breakup of exotic nuclei

The effects of core excitation in the breakup of exotic nuclei

Complete and incomplete fusion of weakly bound nuclei

Strong transfer channels in theLi6+Si28system at near-barrier energies

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