The exclusive electroproduction process $vec{e}p to e^prime n pi^+$ was measured in the range of the photon virtuality $Q^2 = 1.7 - 4.5 rm{GeV^2}$, and the invariant mass range for the $npi^+$ system of $W = 1.15 - 1.7 rm{GeV}$ using the CEBAF Large
Acceptance Spectrometer. For the first time, these kinematics are probed in exclusive $pi^+$ production from protons with nearly full coverage in the azimuthal and polar angles of the $npi^+$ center-of-mass system. The $npi^+$ channel has particular sensitivity to the isospin 1/2 excited nucleon states, and together with the $ppi^0$ final state will serve to determine the transition form factors of a large number of resonances. The largest discrepancy between these results and present modes was seen in the $sigma_{LT}$ structure function. In this experiment, 31,295 cross section and 4,184 asymmetry data points were measured. Because of the large volume of data, only a reduced set of structure functions and Legendre polynomial moments can be presented that are obtained in model-independent fits to the differential cross sections.
