Two-Neutron Decay from the Ground State of 26O

Recent experiments have indicated that $^{24}$O is bound and the tests have failed to find bound states of $^{25}$O and $^{26}$O. So to further understand the behavior and properties of neutron-rich heavy oxygen isotopes the study of $^{26}$O is important. Unstable $^{26}$O decays to stable $^{24}$O by emitting two neutrons rather than decaying via $^{25}$O, which has an unbound ground state energy of 770keV. An investigation of $^{26}$O was conducted at the National Superconducting Cyclotron Laboratory, which possesses the capability to produce rare isotope beams and detect neutrons with an efficiency of about 70$\%$ with the MoNA detector. The reaction of interest being $^{26}$O$\rightarrow^{24}$O + 2n, production of $^{26}$O was done by one-proton removal from a $^{27}$F beam with an energy of 82 MeV/u impending on a 705 mg/cm$^2$ Be target. Coincidence of two neutrons with $^{24}$O was measured for four-vector momentum event reconstruction. The analysis of this experiment will determine the invariant mass of $^{26}$O and the status of the analysis will be presented.