Abstract
The single-channel resonating-group method with a central nucleon-nucleon potential is used to study the $n$ + $^{3}\mathrm{H}$ system up to a c.m. energy of about 17 MeV. The specific distortion of the triton in this system is investigated, and it is found that its effect on the $n$ + $^{3}\mathrm{H}$ phase shifts is small. A phenomenological imaginary potential is included in the calculation in order to account approximately for the effects of reactions on the elastic channel. The strength of this potential is chosen to reproduce measured total reaction cross sections for the charge-conjugate system $p$ + $^{3}\mathrm{He}$. The results of the calculation are in satisfactory agreement with measured $n$ + $^{3}\mathrm{H}$ elastic differential cross sections.NUCLEAR REACTIONS $^{3}\mathrm{H}(n, n)$, ${E}_{\mathrm{c}.\mathrm{m}.}=4.5\ensuremath{-}17.25$ MeV; calculated phase shifts and $\ensuremath{\sigma}(\ensuremath{\theta})$; studied specific distortion. Resonating-group method with imaginary potential.
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