The number and distribution of disintegration protons to be expected from the ${\mathrm{H}}^2\mathrm{}(n,p)\mathrm{}$ reaction at 90-Mev incident neutron energy is calculated phenomenologically. No assumption about the character of nuclear forces is required, the impulse approximation allowing direct use of high energy $n-p$ and $p-p$ scattering data. Agreement with experiment is satisfactory, there being no evidence for a difference between $n-n$ and $p-p$ interactions.

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