Form-Factor RatioGE(n)GE(p)at Low Momentum Transfers

Abstract
Measurements of the ratio of the deuteron to proton electric form factors, GE(d)GE(p), were made from elastic electron-deuteron scattering to a precision of approximately 1% for the range of momentum transfers 0.10<~q2<~0.8 F−2. Within experimental errors the slope as obtained from the ratio GE(n)GE(p) agrees with the extrapolated thermal neutron-electron interaction slope when relativistic corrections and Feshbach-Lomon deuteron wave functions are applied. The deuteron radius was found to be 1.95 ± 0.02 F, the same as predicted by the Feshbach-Lomon calculation.