Separable Potentials for (d,p) Reaction Calculations

21st International School on Nuclear Physics and Applications & International Symposium on Exotic Nuclei

Elster, Ch.^1 ; Hlophe, L.^1 ; Eremenko, V.^1,5 ; Nunes, F.M.^2 ; Thompson, I.J.^3 ; Arbanas, G.^4 ; Escher, J.E.^3

INPP, Ohio University, Athens

OH, United States^1

NSCL, Michigan State University, East Lansing

MI, United States^2

Lawrence Livermore National Laboratory, Livermore

CA, United States^3

Oak Ridge National Laboratory, Oak Ridge

TN, United States^4

SINP, Lomonosov Moscow State University, Moscow, Russia^5

关键词: Coulomb forces;    Direct measurement;    Indirect methods;    Matrix elements;    Momentum spaces;    Nucleus Optical potential;    Separable potential;    Separable representations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/724/1/012014/pdf
DOI  :  10.1088/1742-6596/724/1/012014

来源: IOP

【 摘 要 】

An important ingredient for applications of nuclear physics to e.g. astrophysics or nuclear energy are the cross sections for reactions of neutrons with rare isotopes. Since direct measurements are often not possible, indirect methods like (d,p) reactions must be used instead. Those (d,p) reactions may be viewed as effective three-body reactions and described with Faddeev techniques. An additional challenge posed by (d,p) reactions involving heavier nuclei is the treatment of the Coulomb force. To avoid numerical complications in dealing with the screening of the Coulomb force, recently a new approach using the Coulomb distorted basis in momentum space was suggested. In order to implement this suggestion, one needs to derive a separable representation of neutron- and proton-nucleus optical potentials and compute their matrix elements in this basis.