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FIZIKA B 13 (2004) 2, 545-552
MEASUREMENTS OF THE ELECTRIC FORM FACTOR OF THE NEUTRON AT JLAB VIA
RECOIL POLARIMETRY IN THE REACTION d(e,e¢n)p
JOHN MICHAEL FINN
for the Jefferson Laboratory E93038 Collaboration
Department of Physics, College of William and Mary, Williamsburg, VA
23187, USA
Received 1 September 2003;
Accepted 26 April 2004
Online 22 November 2004
Preliminary results are reported for measurements of the ratio of the electric form
factor to the magnetic form factor of the neutron, GEn/GMn, obtained via recoil polarimetry from the
quasielastic 2H(e,
e¢n) 1H
reaction at Q2 values of 0.45, 1.13, and 1.45 (GeV/c)2. The
measurements, conducted in Hall C of the Thomas Jefferson National Accelerator Facility,
together with other recent polarization measurements, are the result of a decade long
effort to establish a firm experimental database for the important, but elusive, electric
form factor of the neutron.
PACS numbers: 14.20.Dh, 13.40.Gp, 25.30.Bf, 24.70.+s
UDC 539.125
Keywords: neutron, ratio of electric to magnetic form factor
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