Direct Measurement ofn−pandn−dTotal Cross Sections from 700 to2900 MeVc

Abstract

Neutron-proton and neutron-deuteron total cross sections have been measured directly at the Princeton-Pennsylvania Accelerator using time of flight to determine the incident neutron momentum. The results cover the region from 700 to $2900 \frac{\mathrm{MeV}}{c}$ with a typical accuracy of 0.8% for each of 26 momentum bins. The data are not consistent with the most precise previous measurements in the same momentum range.