The energy dependence of the effective N-N isovector tensor interaction using the stretched transition from the 3+ ground state of 10B to the 0+ ground state of 10Be over the energy range of 50 to 250 MeV

Angular distributions for the 10B(n,p)10Be gs reaction have been measured over the momentum transfer range of 0.3 to 2.0 fm and bombarding energies ranging from 50 to 250 MeV. Distorted Wave calculations using the Franey-Love interaction show that the angular distributions over incident energies 90 to 200 MeV are fit to within 10%. However, at 250 MeV we find the calculated cross section is too large by 20%. Since the cross section is dominated by the direct isovector tensor amplitude, the comparison is a good test of the energy dependence of the tensor art of the interaction