_{RESOLUT}}$ detector is located approximately 3.5 m upstream of the MCP$\mathrm{_{TGT}}$ detector. Inset: Energy deposit versus time-of-flight spectrum for ions exiting RESOLUT that are incident on $^{12}$C target at E$_{\mathrm{lab}}$=46.7 MeV. Color is used to represent yield in the two dimensional spectrum on a logarithmic scale.](Fig1_19OPaper_v2.eps)

The experiment was performed at the John D. Fox accelerator laboratory at Florida State University. A beam of $^{18}$O ions, accelerated to an energy of 80.7 MeV impinged on a deuterium gas cell at a pressure of 350 torr cooled to a temperature of 77 K. Ions of $^{19}$O were produced via a (d,p) reaction and separated from the incident beam by the electromagnetic spectrometer RESOLUT [@RESOLUT]. Although this spectrometer rejected most of the unreacted beam that exited the production gas cell, the beam exiting the spectrometer consisted of both $^{19}$O and $^{18}$O ions. As each beam particle was independently identified, this beam mixture allowed simultaneous measurement of $^{18}$O + $^{12}$C and $^{19}$O + $^{12}$C thus providing a robust measure of the fusion enhancement due to the presence of the additional neutron. The experimental setup used to measure fusion of oxygen ions with carbon nuclei is depicted in Fig. \[fig:setup\]. To identify beam particles, the energy deposit and time-of-flight [@deSouza11] of each particle was measured. Upon exiting the spectrometer particles first traverse a thin secondary emission foil (0.5 $\mu$m thick aluminized mylar) ejecting electrons in the process. These electrons are accelerated and bent out of the beam path and onto the surface of a microchannel plate detector (MCP$\mathrm{_{RESOLUT}}$) where they are amplified to produce a fast timing signal. After traversing the thin foil of MCP$\mathrm{_{RESOLUT}}$, the ions passed through a compact ionization detector (CID) located approximately 3.5 m downstream. Passage of the ions through this ionization chamber results in an energy deposit ($\Delta$E) characterized by 