Unified Description of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Li</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>Structure and Deuterium-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>He</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>4</mml:mn></mml:mr

Hupin, Guillaume; Quaglioni, Sofia; Navrátil, Petr

doi:10.1103/physrevlett.114.212502

Cited by 64 publications

(152 citation statements)

References 48 publications

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“…More work is also necessary to enable the convergence of our calculation, in particular when heavier targets will be considered, and include the effect of 3N forces [36,49]. The first goal can be achieved by working with cluster wave functions truncated according to the importance of the different components [50], and the second by taking into account 3N forces in an effective way through a normal ordering approximation.…”

Section: Discussionmentioning

confidence: 99%

Deuteron-induced nucleon transfer reactions within anab initioframework: First application top-shell nuclei

et al. 2016

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Background: Low-energy transfer reactions in which a proton is stripped from a deuteron projectile and dropped into a target play a crucial role in the formation of nuclei in both primordial and stellar nucleosynthesis, as well as in the study of exotic nuclei using radioactive beam facilities and inverse kinematics. Ab initio approaches have been successfully applied to describe the 3 H(d, n) 4 He and 3 He(d, p) 4 He fusion processes.Purpose: An ab initio treatment of transfer reactions would also be desirable for heavier targets. In this work, we extend the ab initio description of (d, p) reactions to processes with light p-shell nuclei. As a first application, we study the elastic scattering of deuterium on 7 Li and the 7 Li(d,p) 8 Li transfer reaction based on a two-body Hamiltonian. Methods:We use the no-core shell model to compute the wave functions of the nuclei involved in the reaction, and describe the dynamics between targets and projectiles with the help of microscopic-cluster states in the spirit of the resonating group method.Results: The shape of the excitation functions for deuteron impinging on 7 Li are qualitatively reproduced up to the deuteron breakup energy. The interplay between d-7 Li and p-8 Li particle-decay channels determines some features of the 9 Be spectrum above the d+ 7 Li threshold. Our prediction for the parity of the 17.298 MeV resonance is at odds with the experimental assignment.Conclusions: Deuteron stripping reactions with p-shell targets can now be computed ab initio, but calculations are very demanding. A quantitative description of the 7 Li(d,p) 8 Li reaction will require further work to include the effect of three-nucleon forces and additional decay channels, and improve the convergence rate of our calculations.

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Section: Discussionmentioning

confidence: 99%

Deuteron-induced nucleon transfer reactions within anab initioframework: First application top-shell nuclei

et al. 2016

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“…In Sec. 3.2 we review the first application to describe more challenging deuterium-nucleus dynamics [22], and discuss our ongoing effort to describe deuteron-induced nucleon transfer reactions.…”

Section: Unified Description Of Structure and Reaction Observables Wimentioning

confidence: 99%

“…One of the most challenging and notable applications of the NCSMC accomplished so far is the simultaneous study of the 6 with Λ SRG = 2.0 fm − 1) [22]. Unless otherwise stated, all calculations were carried out using the ansatz of Eq.…”

Section: Deuterium-induced Reactionsmentioning

confidence: 99%

Ab initio calculations of reactions with light nuclei

Quaglioni

Hupin

Calci

et al. 2016

EPJ Web of Conferences

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Abstract. An ab initio (i.e., from first principles) theoretical framework capable of providing a unified description of the structure and low-energy reaction properties of light nuclei is desirable to further our understanding of the fundamental interactions among nucleons, and provide accurate predictions of crucial reaction rates for nuclear astrophysics, fusion-energy research, and other applications. In this contribution we review ab initio calculations for nucleon and deuterium scattering on light nuclei starting from chiral two-and three-body Hamiltonians, obtained within the framework of the ab initio no-core shell model with continuum. This is a unified approach to nuclear bound and scattering states, in which square-integrable energy eigenstates of the A-nucleon system are coupled to (A − a) + a target-plus-projectile wave functions in the spirit of the resonating group method to obtain an efficient description of the many-body nuclear dynamics both at short and medium distances and at long ranges.

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“…An interesting method of analytic continuation of the elastic scattering data at positive energies to negative energies was investigated in Ref. [6], and applied to extract bound-1 state properties of the 2 H+ 4 He system.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Refs. [2][3][4] used a RGM/NCSM method and Ref. [5] used an Alt-Grassberger-Sandhas three-body approach to that end.…”

Section: Introductionmentioning

confidence: 99%

Effective two-body model for spectra of clusters of H2,H3,
Fraser
¹
,
Massen-Hane
²
,
Kadyrov
³

et al. 2017
Phys. Rev. C

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Four light-mass nuclei are considered by an effective two-body clusterisation method; 7 Li as 3 H+ 4 He, 7 Be as 3 He+ 4 He, 8 Be as 4 He+ 4 He, and 6 Li as 2 H+ 4 He. The low-energy spectra of the former three are determined from single-channel Lippmann-Schwinger equations. For the latter, two uncoupled sets of equations are considered; those involving the 3 S 1 and those of the posited 1 S 0 states of 2 H. Low-energy elastic scattering cross sections are calculated from the same 2 H+ 4 He Hamiltonian, for many angles and energies for which data are available. While some of these systems may be more fully described by many-body theories, this work establishes that a large amount of data may be explained by these two-body clusterisations.

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Unified Description ofLi6Structure and Deuterium-He4

Cited by 64 publications

References 48 publications

Deuteron-induced nucleon transfer reactions within anab initioframework: First application top-shell nuclei

Deuteron-induced nucleon transfer reactions within anab initioframework: First application top-shell nuclei

Ab initio calculations of reactions with light nuclei

Effective two-body model for spectra of clusters of H2,H3,
Fraser
¹
,
Massen-Hane
²
,
Kadyrov
³

et al. 2017
Phys. Rev. C

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Unified Description ofLi6Structure and Deuterium-He4

Cited by 64 publications

References 48 publications

Deuteron-induced nucleon transfer reactions within anab initioframework: First application top-shell nuclei

Deuteron-induced nucleon transfer reactions within anab initioframework: First application top-shell nuclei

Ab initio calculations of reactions with light nuclei

Effective two-body model for spectra of clusters of H2,H3,Fraser1, Massen-Hane2, Kadyrov3 et al. 2017Phys. Rev. C

Contact Info

Product

Resources

About

Effective two-body model for spectra of clusters of H2,H3,
Fraser
¹
,
Massen-Hane
²
,
Kadyrov
³

et al. 2017
Phys. Rev. C