Neutron Photoproduction from $^{Nat}$Hg Using 11-15 MeV Linearly Polarized $\gamma$-Rays

The linearly polarized photon beam at the High Intensity $\gamma$-ray Source (HI$\gamma$S) was used to study neutron emission from a $^{nat}$Hg target at energies of 11, 12, 13, 14, and 15 MeV. Twelve liquid scintillator detectors were placed at polar angles of 55$^\circ$, 90$^\circ$ and 125$^\circ$ and at azimuthal angles of $\phi=0^\circ, 90^\circ, 180^\circ, 270^\circ$. Six more detectors were placed at polar angles of 72$^\circ$, 107$^\circ$, and 142$^\circ$ at $\phi=0^\circ$ and $90^\circ$. The ratio of neutron yields parallel to neutron yields perpendicular to the plane of polarization were determined as a function of $E_\gamma$, $E_n$, and $\theta$. Results will be discussed.