Study of the reaction p.bar.p -> n.bar.n with antiproton momentum in the range 700-750 MeV/c

Preliminary results on the charge exchange reaction pp to nn are presented. The differential angular distribution seems to exhibit a sharp peak in the forward direction and a secondary maximum. A diffractive model of Frahn and Venter (1964) seems to be a good fit to the data. (5 refs).