Conférences et séminaires » Séminaire présenté par Guillaume Hupin, Livermore, USA

Séminaire présenté par Guillaume Hupin, Livermore, USA

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Towards a Realistic Description of Light-ion Fusion Reactions for Astrophysics

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Par : G. Hupin, Lawrence Livermore National Laboratory, Livermore CA, USA
Date : mardi 17 septembre 2013 à 10h30
Lieu : IPHC, Salle de Réunion 2e étage du Bâtiment 27

Résumé :

The advances in the fundamental description of the interaction between nucleons, scientific computing and many-body techniques have opened new avenues for the modeling of low-energy light-ion reactions. The ab initio no-core shell model combined with the resonating-group method (NCSM/RGM) [1] is capable of addressing both structural and reaction properties of light-nuclei. The many-body Hilbert space can be further augmented by coupling the NCSM/RGM binary cluster basis to square-integrable NCSM eigenstates with the no-core shell model with continuum (NCSMC) approach [2]. While promising results have already been achieved starting from a two-body Hamiltonian, a truly realistic prediction of nuclear observables requires the treatment the three-nucleon interactions. Using similarity-renormalization-group evolved two- and three-nucleon interactions [3], [4], we will present the N-4He and d-4He scattering processes when accounting for the chiral two- plus three-nucleon interaction versus the chiral two-nucleon interaction. This work sets the stage for modeling of light-ion fusion reactions with realistic nuclear forces, that are important for understanding nuclear astrophysics processes. [5]

Personne à contacter : Kamilia SIEJA


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[2S. Baroni, P. Navr´atil, and S. Quaglioni, Phys. Rev. Lett. 110, 022505 (2013) ; Phys. Rev. C 87, 034326 (2013).

[3E. Jurgenson, P. Navr´atil, and R. J. Furnstahl, Phys. Rev. C 83, 034301 (2011).

[4R. Roth, J. Langhammer, A. Calci, S. Binder, and P. Navr´atil, Phys. Rev. Lett. 107, 072501 (2011).

[5Prepared in part by LLNL under Contract DE-AC52-07NA27344. Support from the U.S. DOE/SC/NP (Work Proposal No. SCW1158), the NSERC grant 401945-2011 and the DFG through contract SFB 634 is acknowledged.