Strength functions for 6He excitations

Danilin, B. V.; Zhukov, M. V.; Vaagen, J. S.; Bang, J.

doi:10.1016/0370-2693(93)90371-n

Cited by 55 publications

(105 citation statements)

References 10 publications

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“…We shall retain only one or a few terms in the HH expansion (6). This approximation is motivated by the rapid increase of the multidimensional centrifugal barrier as the hypermoment K increases, see e.g.…”

Section: Wave Functions and Transition Matrix Elementsmentioning

confidence: 99%

“…In this way the E1 strength function of the one-neutron halo nucleus 11 Be can be explained using a simple two-body model with a Yukawa wave function (WF) for the initial state and plane waves in the final state [10,11]. However, for two-neutron halo nuclei, like 6 He, 11 Li, and 14 Be, a three-body picture is more appropriate but also more complicated. Microscopic three-cluster calculations of the E1 strength function were performed for, e.g., 6 He [9,12].…”

Section: Introductionmentioning

confidence: 99%

“…However, for two-neutron halo nuclei, like 6 He, 11 Li, and 14 Be, a three-body picture is more appropriate but also more complicated. Microscopic three-cluster calculations of the E1 strength function were performed for, e.g., 6 He [9,12]. However, many difficulties and questions caused by incomplete knowledge of the cluster dynamics are still to be resolved.…”

Section: Introductionmentioning

confidence: 99%

“…As a test case the E1 strength function of 6 He is studied and compared with the experimental data of Aumann et al [14]. In a subsequent paper the model will be applied to 11 Li and 14 Be.…”

Section: Introductionmentioning

confidence: 99%

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Analytical E1 strength functions of two-neutron halo nuclei: the 6He example

Forssén¹,

Efros²,

Zhukov³

2002

Nuclear Physics A

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An analytical model is developed to study the spectra of electromagnetic dissociation of two-neutron halo nuclei without precise knowledge about initial and final states. Phenomenological three-cluster bound state wave functions, reproducing the most relevant features of these nuclei, are used along with no interaction final states. The 6 He nucleus is considered as a test case, and a good agreement with experimental data concerning the shape of the spectrum and the magnitude of the strength function is found.

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Section: Wave Functions and Transition Matrix Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analytical E1 strength functions of two-neutron halo nuclei: the 6He example

Forssén¹,

Efros²,

Zhukov³

2002

Nuclear Physics A

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“…Clearly, the interaction of valence neutrons is vital for the stability of the two-neutron halo nuclei. They provide interesting examples of the three-body problem in the limit of very weak binding [7], and the three-body methods (within both Faddeev and cluster type approaches) have been extensively applied to study them [3,[8][9][10][11][12][13][14][15][16][17][18][19]. Other approaches like non-relativistic [20] and relativistic [21,22] mean field models and many-body calculations [23] have also been used to investigate the structure of such nuclei.…”

Section: Introductionmentioning

confidence: 99%

Four-body DWBA calculations of the Coulomb breakup of 6He

Chatterjee¹,

Banerjee²,

Shyam³

2001

Nuclear Physics A

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We investigate the Coulomb breakup of the two-neutron halo nucleus 6 He by extending the framework of the finite range post form distorted wave Born approximation theory introduced earlier for the description of the breakup of one-neutron halo nuclei. The model can use the realistic three-body wave function for the 6 He ground state. Calculations have been performed for energy, total and parallel momentum distributions of 4 He fragment. The two-body 4 He-neutron and neutron-neutron correlations have also been calculated. Our results are compared with those of an adiabatic model of the Coulomb breakup reactions. The two theories lead to almost identical results. Comparisons are also made with the available experimental data. It is found that the pure Coulomb breakup can describe the bulk of the data taken at below grazing angles. However, a rigorous description of all the available data requires the consideration of the nuclear breakup effects. PACS numbers: 24.50.+g, 25.60.Gc Key words: Coulomb breakup of 6 He, two-neutron halo nucleus, post form DWBA with finite range effects.

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J-Matrix Approach to Loosely-Bound Three-Body Nuclear Systems

Lurie

Shirokov

The J-Matrix Method

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We discuss the extension of the oscillator-basis J-matrix formalism on the case of true A-body scattering. The formalism is applied to loosely-bound 11 Li and 6 He nuclei within three-body cluster models 9 Li + n + n and α + n + n. The J-matrix formalism is used not only for the calculation of the three-body continuum spectrum wave functions but also for the calculation of the S-matrix poles associated with the 11 Li and 6 He ground states to improve the description of the binding energies and ground state properties. The effect of the phase equivalent transformation of the n−α interaction on the properties of the 6 He nucleus is examined.

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Strength functions for 6He excitations

Cited by 55 publications

References 10 publications

Analytical E1 strength functions of two-neutron halo nuclei: the 6He example

Analytical E1 strength functions of two-neutron halo nuclei: the 6He example

Four-body DWBA calculations of the Coulomb breakup of 6He

J-Matrix Approach to Loosely-Bound Three-Body Nuclear Systems

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