Spectroscopic amplitudes and microscopic substructure effects in nucleon capture reactions

Details Spectroscopic amplitudes and microscopic substructure effects in nucleon capture reactions Spectroscopic amplitudes and microscopic substructure effects in nucleon capture reactions

2001-07-03

arxiv.org/abs/nucl-th/0107011v2

Phys.Rev. C64 (2001) 065801

Physics

Nuclear Physics

Nuclear Theory

no figures; replaced by version accepted for publication by PRC; modified version includes some changes to wording and notatio

Scientific paper

10.1103/PhysRevC.64.065801

Spectroscopic amplitudes play an important role in nuclear capture reactions. These amplitudes are shown to include both single-particle and polarization effects: the former through their spatial dependence and the latter through their normalization (the spectroscopic factors). Coupled-channels equations are developed for the spectroscopic amplitudes. These equations serve as a convenient starting point for the derivation of several approximations: Hartree, Hartree-Fock and two different single-particle models. The single-particle models include antisymmetry in different ways, but both miss many-body effects. Therefore, cross sections calculated with either of these models need to be multiplied by the spectroscopic factor.

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