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Large-scale QRPA calculation of E1-strength and its impact on the neutron capture cross section

S. Goriely·E. Khan
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Abstract

Large-scale QRPA calculations of the E1-strength are performed as a first attempt to microscopically derive the radiative neutron capture cross sections for the whole nuclear chart. A folding procedure is applied to the QRPA strength distribution to take the damping of the collective motion into account. It is shown that the resulting E1-strength function based on the SLy4 Skyrme force is in close agreement with photoabsorption data as well as the available experimental E1-strength at low energies. The increase of the E1-strength at low energies for neutron-rich nuclei is qualitatively analyzed and shown to affect the corresponding radiative neutron capture cross section significantly. A complete set of E1-strength function is made available for practical applications in a table format for all 7<Z<111 nuclei lying between the proton and the neutron drip lines.

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S. Goriely, E. Khan. 2002-03-27. Large-scale QRPA calculation of E1-strength and its impact on the neutron capture cross section. https://doi.org/10.1016/s0375-9474(02)00860-6

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