ELASTIC ELECTRON DEUTERON SCATTERING ON A TENSOR POLARIZED SOLID ND3 TARGET

Elastic electron deuteron scattering has been measured at the Bonn 2.5 GeV electron-synchrotron using a tensor polarized ND3 target. The scattered electrons and deuterons were detected in coincidence by two magnetic spectrometers. Data were taken at an average value of four momentum transfer of Q2 = 0.495 (GeV/c)2 in order to separate the electric monopole and quadrupole form factors of the deuteron. To have a sufficient control of systematic effects, both polarized and unpolarized cross sections were measured with an identical experimental set up. In the ratio R(EXP) = d-sigma-pol/d-sigma-unp systematic effects are expected to cancel. This ratio R(EXP) is related to the theoretical polarized cross section d-sigma-T where the spin quantization axis for the deuterons is orientated in the ed-scattering plane, perpendicular to the virtual photon direction. Our final result for the corresponding recoil tensor polarization is t20 = -2.01 +/- 1.13.