(Finn, Crouse, Carlini, Lung, Roche)
The group is involved in Jefferson Lab experiment E93-038 (spokespersons Madey & Kowalski), which recently completed data-taking in Hall C at JLab. The experiment is a precise measurement of the electric form factor of the neutron at several Q2 values, using polarization transfer in the
d(e,e'n)p
reaction (polarized electron beam, outgoing neutron polarization measured).
The electromagnetic form factors of the nucleon provide fundamental input to test models of hadron structure, are important for nuclear structure calculations, and are required as input to parity-violation studies of strangeness in the nucleon. The electric form factor of the neutron is the least well-known of these form factors. and this measurement will provide important new high-precision data. Erick Crouse will base his PhD thesis on this experiment.