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Continuum dipole response near the threshold and the direct neutron capture cross section at astrophysical energies

Published under licence by IOP Publishing Ltd
, , Citation Masayuki Matsuo 2013 J. Phys.: Conf. Ser. 445 012019 DOI 10.1088/1742-6596/445/1/012019

1742-6596/445/1/012019

Abstract

We apply the continuum quasiparticle random phase approximation to calculate the direct neutron capture cross section relevant to the r-process nucleo-synthesis. The electric dipole strength function in an even-even n-rich nucleus is decomposed with respect to the channels of direct neutron decays. Using the detailed balance relation, the partial dipole strengths are converted to obtain the direct neutron-capture cross sections. Numerical examples are given for 142Sn.

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10.1088/1742-6596/445/1/012019