Monopole and quadrupole polarization effects on the alpha-particle description of $^{8}$Be

Details Monopole and quadrupole polarization effects on the alpha-particle description of $^{8}$Be Monopole and quadrupole polarization effects on the alpha-particle description of $^{8}$Be

2004-12-21

arxiv.org/abs/nucl-th/0412086v1

Phys.Rev.C71:044322,2005

Physics

Nuclear Physics

Nuclear Theory

20 pages, 4 figures. submitted to Phys.Rev.C

Scientific paper

10.1103/PhysRevC.71.044322

We investigate the effect of monopole and quadrupole modes on the elastic alpha-alpha resonance structure of $^{8}$Be. To this end we make a fully microscopic coupled channels calculation with three coupled channels, using the Algebraic Model. The continuum spectrum and wave functions are analyzed in terms of the individual channels to understand the nature of the resonances. It is shown that both monopole and quadrupole modes have a non-negligible effect on the resonances in the alpha-alpha continuum.

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