  The quasi-free pn->dphi reaction has been studied at the Cooler Synchrotron
COSY-Juelich, using the internal proton beam incident on a deuterium
cluster-jet target and detecting a fast deuteron in coincidence with the K+K-
decay of the phi-meson. The energy dependence of the total and differential
cross sections are extracted for excess energies up to 80 MeV by determining
the Fermi momentum of the target neutron on an event-by-event basis. Though
these cross sections are consistent with s-wave production, the kaon angular
distributions show the presence of p waves at quite low energy. Production on
the neutron is found to be stronger than on the proton but not by as much as
for the eta-meson.
