Two-neutron sequential decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts /><mml:none /><mml:mn>24</mml:mn></mml:mmultiscripts></mml:math>
Two-neutron sequential decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts /><mml:none /><mml:mn>24</mml:mn></mml:mmultiscripts></mml:math>
A two-neutron unbound excited state of $^{24}\mathrm{O}$ was populated through a ($d,{d}^{\ensuremath{'}}$) reaction at 83.4 MeV/nucleon. A state at $E=715\ifmmode\pm\else\textpm\fi{}110\phantom{\rule{0.28em}{0ex}}(\text{stat})\phantom{\rule{0.28em}{0ex}}\ifmmode\pm\else\textpm\fi{}\phantom{\rule{0.28em}{0ex}}45\phantom{\rule{0.28em}{0ex}}(\text{sys})\phantom{\rule{0.28em}{0ex}}\mathrm{keV}$ with a width of $\mathrm{\ensuremath{\Gamma}}<2$ MeV was observed above the two-neutron separation energy placing it at $7.65\phantom{\rule{0.28em}{0ex}}\ifmmode\pm\else\textpm\fi{}\phantom{\rule{0.28em}{0ex}}0.2\phantom{\rule{0.28em}{0ex}}\mathrm{MeV}$ with respect to the ground state. Three-body correlations for the decay of $^{24}\mathrm{O}\phantom{\rule{4pt}{0ex}}\ensuremath{\rightarrow}\phantom{\rule{0.16em}{0ex}}^{22}\mathrm{O}+\phantom{\rule{0.16em}{0ex}}2n$ …