The spin dependent cross sections, σT1/2 and σT3/2 , and asymmetries, A∥ and A⊥ for3He have been measured at the Jefferson Lab's Hall A facility. The inclusive scatteringprocess 3He(e,e)X was performed for initial beam energies ranging from 0.86 to 5.1GeV, at a scattering angle of 15.5°. Data includes measurements from the quasielasticpeak, resonance region, and the deep inelastic regime. An approximation forthe extended Gerasimov-Drell-Hearn integral is presented at a 4-momentum transferQ2 of 0.2-1.0 GeV2.
Also presented are results on the performance of the polarized 3He target. Polarizationof 3He was achieved by the process of spin-exchange collisions with opticallypumped rubidium vapor. The 3He polarization was monitored using the NMR techniqueof adiabatic fast passage (AFP). The average target polarization was approximately35% and was determined to have a systematic uncertainty of roughly ±4%relative.
