Radiative capture on neutron rich nuclei

The $({\rm n},γ)$--cross sections for neutron--rich oxygen isotopes have been calculated in the direct capture model. The experimental data for ${^{18}{\rm O}}({\rm n},γ){^{19}{\rm O}}$ can be reproduced using this model. Compared to previous work the cross section for ${^{19-21}{\rm O}}({\rm n},γ){^{20-22}{\rm O}}$ are enhanced considerably by factors between four and 300.

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