Low-energyHe<mml:mprescripts/><mml:none/>3(α,α)He<mml:mprescripts/><mml:none/>3elastic scattering and theHe<mml:mprescripts/><mml:none/>3(α,γ)Be<mml:mprescripts/><mml:none/>7reaction

2009/06/16 by P. Mohr · 1 citation
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Nuclear physics research studies #astro-ph.IM #nucl-th

paper · pdf · doi:10.1103/physrevc.79.065804

published as Phys.Rev.C79:065804,2009 · 11 pages, 7 figures, Phys. Rev. C, accepted

arxiv created 2009/06/16 · openalex publication_date 2009/06/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The cross sections of the ³He(\ensuremathα,\ensuremathα)³He and ³He(\ensuremathα,\ensuremathγ)⁷Be reactions are studied at low energies using a simple two-body model in combination with a double-folding potential. At very low energies the capture cross section is dominated by direct s-wave capture. However, at energies of several MeV the d-wave contribution increases, and the theoretical capture cross section depends sensitively on the strength of the L=2 potential. Whereas the description of the L=2 elastic phase shift requires a relatively weak potential strength, recently measured capture data can be described only with a significantly enhanced L=2 potential. A simultaneous description of the new experimental capture data and the elastic phase shifts is not possible within this model. Because of the dominating extranuclear capture, this conclusion holds in general for most theoretical models.

Citations

• Alpha scattering and capture reactions in theA=7 system at low energies
• A compilation of charged-particle induced thermonuclear reaction rates

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